Custom Marine Exhaust Hoses
RONTEIX offers a full range of standard marine wet exhaust hoses and customization tailored to your dimension, installation requirements as per your design and drawing, as well as OEM and ODM service by printings and labels.
Standard Hose Options
Choose from straight hoses, wire-reinforced hoses, corrugated hoses and short flexible connectors in available standard sizes.
Custom Hose Solutions
Specify the inner diameter, length, wall thickness and reinforcement structure. Custom options include elbows, reducers and molded hose shapes developed from your drawings or samples.
Manufacturing Capabilities
From drawing review and prototype development to production and inspection, we support marine exhaust hose projects with application-specific material and construction options.
Custom Logo & Private Label
Personalize your hoses with your brand logo, product codes, size markings and batch identification. Custom packaging options are available for private-label orders.
Marine Exhaust Hose for Sale
RONTEIX offers a wide range of SAE J2006 marine exhaust hoses made of rubber and silicone for diesel and gasoline engine boat applications, resistant to exhaust gas, salt water & abrasion under high temperature conditions.
Lloyds approved, lightweight, corrugated construction with flexible radius, used for conveying wet exhaust fumes.
Made of silicone rubber with reinforcement, available in 45, 90, 135, and U-shaped elbows, high-temperature resistant up to 230℃.
Compatible with coolant, seawater and hot air, 3 to 5 ply polyester or aramid fabric, temperature range from -50°C to +220°C, vibration absorption.
Corrugated pattern with high flexibility, customize any inner diameters, colors, thickness, layers, and reinforcement.
Flexible marine wet exhaust hose with semi-corrugated cover, high flexibility for tight bends, resistant to exhaust gases, saltwater, and abrasion, -30°C to +100°C.
Marine fuel and oil hose, made of rubber material, polyester, and steel wire reinforced, used for fluid transfer applications.
Custom stainless steel exhaust manifold piping in shape, length, outer diameter, and finishing, 18 gauge, used for exhaust system or connection.
Heavy-duty #316 stainless steel t-bolt hose clamp, saltwater corrosion protection, engineered for reliable and secure fittings in marine applications.
Marine Exhaust Hoses by Material
The material used for RONTEIX marine exhaust hoses (typically used in wet exhaust systems) is primarily determined by the temperature they must withstand, their oil resistance, and their flexibility requirements. According to industry standards (such as SAE J2006), the most common materials for exhaust hoses manufactured by RONTEIX on the market are as follows:
High performance with extreme flexibility, heat resistance and aging, typically 175°C to 180°C or higher, and even higher for short periods.
Excellent resistance to high temperatures, ozone, aging, and seawater corrosion, combined with a steel wire and a fabric reinforcement layer, approx. 100°C to 135°C.
Withstands oil and fuel, mixed with NBR/PVC or NBR/SBR rubber blends, frequently used in commercial or high-performance vessels, complies with SAE J2006 wet exhaust standard.
Flame retardancy and weather resistance, along with good overall resistance to mechanical wear, seawater, and minor oil contamination, used on commercial vessels with higher fire safety requirements.
Marine Exhaust Hoses by Size
RONTEIX offers marine exhaust hose standard internal diameters up to 8” (203mm) and customizes non-standard internal diameters, length, shapes, and thickness for special requirements.
Synthetic rubber, withstand to exhaust, antifreeze, weak chemicals, and seawater, flexibility,no-collapse hardwall steel wire reinforced for boat’s plumbing and coolant engine system.
Made from high-grade silicone rubber with polyester reinforcement and 3 layers, and meets SAE J20R3 Class A heater hose (& TMP RP303B Class I, Grade 2).
Hardwall wire-reinforced synthetic rubber, used for engine intake and wet exhaust connections where bends are required, meets SAE J2006 Type R2.
2-ply synthetic rubber softwall construction with helix wire, chemical- and ozone-resistant, 200 psi, used in pumping and circulating water, bilge discharge, and other plumbing applications.
Built-in wire helix to prevent collapsing or kinking, made of synthetic EPDM rubber, withstand -20°F to 250°F continuous temperature, exceeds SAE J2006-R2, ABYC, NMMA P-1 marine exhaust standards.
Manufactured with heavy-duty EPDM or Nitrile rubber, wire reinforcement provides exceptional flexibility and a tight bend radius, resistant to cooling water and exhaust gases.
Used in wet-exhaust systems, engine water circulation, and bilge pump lines for replacement or new installation, available in hardwall(wire reinforced), corrugated hardwall and softwall(no wire).
Used in wet exhaust systems to transport cooling water and exhaust gases out of boat from engine, formulated EPDM or Nitrile, resistant to ozone, saltwater, heat, oil, fuel and antifreeze.
Engineered for wet exhaust systems for boats, combining engine cooling water or exhaust gases, meeting SAE J2006, Lloyd’s Register Type Approval, and extreme conditions for tight bending radius.
Available in rubber and silicone material for your option based on your requirements on heat temperature, vibrations, saltwater, ozone, oil, and fuel resistance.
Heavy-duty large inboard diesel engine exhaust hose reinforced wire-reinforced with steel wire hardwall, meets SAE J2006 Type R2 standard and resistant to high heat, saltwater and ozone.
Marine Exhaust Hose by Construction
RONTEIX offers marine exhaust hoses with different physical wall constructions for your options as follows, which are specifically engineered to withstand high-temp exhaust gases, corrosive salt water, vibration and back pressure.
Heavy-duty, flexibility with non-slip twill pattern, optional silicone and rubber material, polyester, steel wire reinforcement with 3 layers.
Heavy-duty wire-reinforced or wire helix coil sandwiched synthetic rubber(EPDM, or NBR), prevents from collapsing under suction, kinking when bend.
Flexible, no-wire reinforced but with polyester reinforcement, made of rubber or silicone material, withstand bends and crack for transferring hot exhaust gases or water.
Feature Box
RONTEIX marine exhaust hoses come in two types: rubber marine exhaust hoses and silicone exhaust hoses. Due to the differences in their materials, their properties – such as temperature resistance and oil resistance – also vary.
Silicone marine exhaust hose withstands extreme temperatures up to 250°C, and rubber exhaust hose withstands up to 250°C.
Polyester and aramid reinforcement for softwall construction and steel wire embedded for hardwall construction.
Without steel wire and polyester reinforcement, it provides excellent flexibility when bending and absorbs vibrations.
Supports OEM replacement and comparison-based selection for marine and automotive modifications and turbocharger upgrades.
Provide a One-stop Marine Exhaust Solution
RONTEIX provides a one-stop marine exhaust solution by transferring engine gases and saltwater, and manufactures rubber and silicone mandrel hoses by customization.
Rubber Exhaust Hose
Rubber exhaust hose manufactured by RONTEIX is used to transfer hot exhaust fumes, gases, water, and particulates for marine boats, vehicles, and machinery. Synthetic rubbers we typically use include EPDM and Nitrile (NBR), which are reinforced with polyester or steel wire and come with softwall or harwall construction for different applications.
RONTEIX rubber exhaust hoses comply with SAE J2006, ISO 13363 standards, and Lloyds, or RINA approvals. Our rubber exhaust hoses withstand high temperatures up to 170°C and handle both wet exhaust (mixed with water) and dry exhaust.
Silicone Exhaust Hose
RONTEIX silicone exhaust hoses are manufactured by silicone rubber material reinforced with polyester,or aramid fabric, and can resist up to 260°C high temperature. Constructed without steel wire with softwall for high flexibility and with steel wire for hardwall which can prevent hose from collapsing or folding under high vacuum or deep bends.
Our silicone exhaust hoses are widely used for marine wet exhaust system and high performance automotive cooling or turbo applications under high temperature working conditions.
Resource
For more products and to learn about RONTEIX, please click to download our catalogue as follows:
Know more about product knowledge and manufacturing process? Just click the video link.
Softwall vs. Hardwall Marine Exhaust Hose: Which One Should You Choose?
Please check the following comparison table from RONTEIX to help you choose the right marine exhaust hose based on your engine’s exhaust system, hose routing, bending requirements, and operating conditions. The main difference lies in their internal reinforcement structure, which directly affects flexibility, kink resistance, vacuum resistance, and installation suitability.
Marine Exhaust Hose Comparison Chart
| Features | Softwall Marine Exhaust Hose | Hardwall Marine Exhaust Hose | Corrugated Hardwall Marine Exhaust Hose |
|---|---|---|---|
| Construction | Synthetic rubber reinforced with textile plies | Synthetic rubber reinforced with textile plies and a steel wire helix | Corrugated rubber construction with textile and helical wire reinforcement |
| Steel Wire Reinforcement | No | Yes | Yes |
| Outer Surface | Smooth | Typically smooth | Corrugated |
| Flexibility | Flexible in handling, but limited bending capability | Moderate flexibility | High flexibility for curved routing |
| Bend Radius | Best for straight connections | Depends on diameter and hose design | Generally smaller than smooth hardwall hose |
| Kink Resistance | Low when bent | High | Very high when properly installed |
| Vacuum Resistance | Limited; not intended for suction unless rated | Good, subject to hose specifications | Good, subject to hose specifications |
| Collapse Resistance | Limited | High | High |
| Installation | Easy to cut and clamp | More difficult to cut due to embedded wire | Easier to route around obstacles; wire cutting may be required |
| Weight | Generally lighter | Generally heavier | Varies with construction |
| Typical Applications | Straight wet exhaust connections | Straight or moderately curved wet exhaust systems | Complex engine compartments and tight exhaust routing |
| Cost | Generally lower | Moderate to higher | Generally higher |
| Recommended Use | Short, straight hose sections | Installations requiring structural reinforcement | Tight bends and complex routing |
Note: Actual minimum bend radius, vacuum rating, temperature resistance, and pressure limits depend on the specific hose model, diameter, and manufacturer’s technical data. Corrugated hardwall hoses may use single or multiple wire helices.
Visual Comparison
Best for straight connections Best for reinforced exhaust routing Best for tighter bends
Which Marine Exhaust Hose Is Right for Your Application?
Your Requirements | Recommended Hose |
|---|---|
| Short, straight exhaust pipe connection | Softwall |
| Straight installation requiring additional structural reinforcement | Hardwall |
| Moderate bends in the exhaust system | Hardwall, subject to minimum bend radius |
| Tight bends or limited engine compartment space | Corrugated Hardwall |
| Hose exposed to suction or negative pressure | Vacuum-rated Hardwall |
| Easy cutting and installation for straight sections | Softwall |
| Complex marine exhaust routing | Corrugated Hardwall |
Need Help Choosing the Right Marine Exhaust Hose?
RONTEIX offers OEM and custom marine exhaust hose solutions for different engine configurations and installation requirements. Whether you need a straight softwall hose, a wire-reinforced hardwall hose, or a flexible corrugated exhaust hose, our team can help you select the appropriate construction.
Tell us your engine horsepower, hose inside diameter, required length, bend angle or available installation space, and operating conditions. Our team will recommend a suitable hose structure, material, and reinforcement design for your application.
Manufacturing Process
RONTEIX marine exhaust hoses include rubber marine exhaust hoses and silicone marine exhaust hoses, but their manufacturing processes are completely different. One is produced by hand-wrapping, while the other is manufactured using an extrusion and mandrel-built process. Below, take a closer look at how they are actually produced.
Silicone marine exhaust hoses are manufactured using a hand-wrapping process. The specific workflow is as follows:
Specification Review → Silicone Compounding → Sheet & Reinforcement Preparation → Mandrel Forming → Reinforcement Application → Outer Cover Wrapping → Curing → Demolding & Trimming → Inspection → Branding & Packaging
Rubber marine exhaust hoses are manufactured using a combination of extrusion and mandrel-building processes. The specific process is as follows:
Compound preparation → Inner layer extrusion → Mandrel insertion → Cord wrapping → Final inspection → Mandrel removal → Vulcanization → Spiral steel wire / Outer layer / Water-resistant fabric
More About Marine Exhaust Hose
Please follow RONTEIX marine exhaust hose specification, data sheet, production videos, standards & compliance, quality control & testing and applications as follows, and if you are interested, please send your inquiry today!
- Data Sheet
- Production Video
- Standards & Compliance
- Quality Control & Testing
- Application
Marine Exhaust Hose Technical Specifications
| Technical Parameter | Specification / Availability |
|---|---|
| Hose Inside Diameter (ID) | According to customer requirements and available tooling |
| Outside Diameter (OD) | Determined by ID, wall thickness and reinforcement |
| Wall Thickness | Customizable; engineering confirmation required |
| Operating Temperature | TBC — based on hose compound and wet exhaust conditions |
| Maximum Intermittent Temperature | TBC — requires thermal validation |
| Working Pressure | TBC — model-specific test rating |
| Burst Pressure | TBC — verified by hydrostatic testing |
| Vacuum Resistance | TBC — relevant for specified hardwall applications |
| Minimum Bend Radius | TBC — depends on hose ID and construction |
| Rubber Hardness | TBC — according to approved compound specification |
| Tensile Strength | TBC — verified by material testing |
| Elongation at Break | TBC — verified by material testing |
| Abrasion Resistance | Evaluated according to project requirements |
| Ozone Resistance | Evaluated according to applicable test requirements |
| Saltwater Compatibility | To be validated for the selected compound and service conditions |
| Service Life | Depends on operating temperature, installation and maintenance |
Engineering note: Wet exhaust hose ratings must not be applied to uncooled dry exhaust systems. A hose should only be advertised with a temperature, pressure or standard-compliance rating after testing the relevant product construction.
Silicone Marine Exhaust Hose Production
Rubber Marine Exhaust Hose Production
Applicable Standards & Compliance
| Standard | Scope | RONTEIX Status |
|---|---|---|
| SAE J2006 | Marine exhaust hose | Compliance to be verified by product testing |
| ISO 13363:2016 | Rubber and plastics hoses for marine-engine wet-exhaust systems | Compliance to be verified by product testing |
| ISO 1402 | Hydrostatic testing of rubber and plastics hoses | Applicable test method |
| ISO 4671 | Hose dimensional measurement | Applicable test method |
| ISO 8033 | Adhesion between hose components | Applicable test method |
| ISO 1817 | Effect of liquids on rubber | Applicable material test method |
| ISO 9001 | Quality management systems | Factory certification scope and validity to be verified |
SAE J2006 and ISO 13363 are relevant product standards, but listing them does not constitute a certificate or compliance declaration.
| Inspection / Test | Purpose | Verification |
|---|---|---|
| Raw Material Inspection | Verify incoming compound and reinforcement materials | Incoming QC records |
| Dimensional Inspection | Check ID, OD, wall thickness and length | Caliper and dimensional measurements |
| Visual Inspection | Identify surface defects, cracks or exposed reinforcement | Visual QC |
| Hardness Testing | Verify rubber compound hardness | Durometer testing |
| Pressure Testing | Evaluate pressure integrity | Applicable hydrostatic test procedure |
| Burst Pressure Testing | Determine pressure failure threshold | Sample-based destructive test |
| Adhesion Testing | Evaluate bonding between hose layers | Applicable test method |
| Bend Radius Evaluation | Verify routing capability | Product-specific bending assessment |
| Heat Resistance Testing | Evaluate performance under thermal exposure | Application-specific test |
| Final Inspection | Verify labeling, dimensions and packaging | Final QC checklist |
RONTEIX follows above testing frequency, acceptance criteria and availability should be defined in the approved inspection and test plan. Not every test is necessarily performed on every finished hose.
Wet exhaust hose is a heavy-duty hose made of silicone or rubber(EPDM, NBR, or CR) that is used on a marine vessel to transfer hot engine exhaust gases and saltwater out of boat. It is flexible and can withstand temperatures from -50°C to +260°C.
Generally, standard replacement frequency is 5 to 10 years, because marine exhaust hoses can last 5 to 10 years according to RONTEIX over 15 years’ experience, but exact lasting time is up to working condition: (fresh water or salt water), hose material(silicone or rubber) or total engine running time and etc.
No, standard marine exhaust hose cannot be used for fuel system. But silicone marine exhaust hoses lined with an inner fluorosilicone layer and CR or NBR marine exhaust hoses can withstand fuel.
- Prepare Your Tools
Gather a sharp utility knife, a hose clamp, a screwdriver, and suitable wire cutters. Use heavy-duty cutters for thicker reinforcing wire.
- Mark the Cutting Position
Measure the required hose length and mark the cutting position. Place a hose clamp beside the mark and tighten it just enough to prevent movement.
- Cut the Rubber Wall
Insert the utility knife through the rubber wall and cut around the hose, using the clamp’s edge as a guide.
- Work Around the Reinforcing Wire
When the blade meets the wire, withdraw it and resume cutting on the other side. Continue around the hose without forcing the knife through the steel wire.
- Cut the Wire and Remove the Offcut
Once the rubber wall is cut, use wire cutters to sever the remaining reinforcing wire and remove the unwanted hose section.
- Trim the Exposed Wire End
Move the clamp aside. Position the cutters perpendicular to the wire and trim the exposed end back inside the hose wall so it cannot protrude as a sharp hook.
- Inspect and Clean the Cut End
Remove loose rubber and wire fragments. Check that the cut is neat, the inner liner is undamaged, and no sharp wire remains exposed.
**Alternative:
If suitable wire cutters are unavailable, use a hacksaw to cut the exposed wire. This method is slower and may produce a less tidy finish.
**Safety:
Secure the hose, wear eye protection, and keep your hands clear of the blade’s path.
Related Product
Request an Official Quote
If you want to get an official quote, please fill in the following form with your detailed requirements, and we will get back to you within 24 hours.
