Question 1

What are your size limits and wall-thickness tolerance?

Accepted Answer

1.5 mm inner diameter up to 110 mm outer diameter.

The extruders and dies we run cover everything from thin capillary tubing to hose that is used as a protective sleeve. Below is the range we quote most often; anything at the edges can be checked against existing tooling before you commit to a mould.

Range and tolerance

Inner diameter: from 1.5 mm.
Outer diameter: up to 110 mm.
Wall thickness and key dimensions: plus or minus 0.5 mm on standard extrusion.
Length: continuous coils, or cut to a fixed length on our automatic cutting line.

Silicone and EPDM tubing in different sizes — Tubing across the size range

Black EPDM hose bundle with consistent bore — Consistent bore, batch to batch

Profiles made to specification — Profiles to your drawing

Why the tolerance is stated as a number

A tolerance only means something when the measurement method is fixed too. Key dimensions are checked at setup and at intervals during the run, and the inspection report states the gauge used. If your drawing calls for something tighter than plus or minus 0.5 mm, send it over: we will say directly whether the die and the compound can hold it instead of accepting the order and sorting out the scrap later.

Next step: Send your ID, OD and tolerance and we will confirm the closest existing die.

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Question 2

Can you supply food-grade, flame-retardant and RoHS-compliant grades?

Accepted Answer

Food-grade, flame-retardant and RoHS grades are all available.

Compliance requirements differ by market, so we start from the end use rather than from a single grade. Tell us the standard you need to meet and the medium the part touches, and we will propose the compound and the documentation that goes with it.

Food contact

Food-grade silicone tubing is extruded from platinum-cured silicone and can be supplied to FDA and LFGB requirements. It is used for beverage, coffee-machine and appliance lines where taste and odour transfer matter, and it stays flexible across the normal service temperature range.

Flame retardancy and environmental compliance

Flame-retardant series can reach UL-94 V0, and our flame-retardant CR hose is rated for roughly -40 °C to +250 °C. Materials are checked against the EU RoHS directive, and REACH declarations are available. Certificates and test reports are issued per batch on request, not as a one-off marketing document.

Food-grade silicone and industrial EPDM grades — Food-grade silicone and EPDM grades

Flame-retardant and foam sealing profiles — Flame-retardant and foam profiles

Profiles produced to a specified compound — Compounds matched to the standard

Next step: Tell us the standard and medium, and we will confirm the grade and documents.

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Question 3

What is the difference between solid and sponge rubber profiles?

Accepted Answer

Solid profiles carry load; sponge profiles seal with less force.

Both solid and sponge (foam) rubber profiles are extruded on the same production lines, but the compound and curing process are adjusted to give very different mechanical properties. Choosing the right type depends on your sealing gap, closure force and environmental exposure.

Solid rubber profiles

Dense, durable and strong. Solid profiles are used where the seal must support weight, resist cutting or maintain a precise shape. Typical applications include anti-collision strips, heavy-duty gaskets and wear pads.

Sponge / foam rubber profiles

Closed-cell or open-cell sponge is much lighter and compresses easily. It is ideal for door seals, enclosure gaskets and appliance seals where a small closing force must fill an uneven gap. We can control density, hardness and cell structure to match your water, dust or noise requirements.

Next step: Send us your gap dimensions and compression requirements and we will recommend the right profile type.

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Question 4

Do you produce braided and reinforced rubber hoses?

Accepted Answer

Yes — braiding and reinforcement are core capabilities.

We produce polyester-braided rubber hoses and middle-layer fibre-reinforced hoses for applications that need abrasion protection, kink resistance and shape retention. Our braiding workshop covers polyester, polypropylene and other composite reinforcements.

When to choose braided or reinforced hose

Choose braided hose when the tube is exposed to movement, vibration or external wear. Choose middle-fibre-reinforced hose when the tube must keep its shape under load or resist kinking on a tight bend radius. Our engineering team can match the reinforcement type and braid density to your bend radius, abrasion and coupling requirements.

Sizes and end fittings

Common inner diameters range from 3 mm to 50 mm, with wall thickness, length and colour customizable. We can also support OEM assemblies with moulded fittings, clamps and quick-connects upon request. Steel-wire braided hose and large-diameter industrial hose are outside our scope.

Next step: Get a quote for your braided or reinforced hose project.

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Question 5

Can you supply liquid-cooling rubber hoses for PC and AI servers?

Accepted Answer

Yes — we specialize in low-evaporation cooling hoses.

Our PC and AI-server liquid-cooling hoses are designed to handle glycol-water mixtures, long-term heat cycles and tight bend radii inside compact chassis. We target an evaporation rate as low as 0.2% on our premium PC liquid-cooling grade.

Reinforcement options

Depending on pressure and abrasion needs, we supply plain extruded tubes, middle-fiber-reinforced tubes and polyester-braided outer layers. Our 2024-added weaving workshop has 10 automatic braiding machines dedicated to liquid-cooling and reinforced hose production.

Typical sizes and customization

Inner diameters commonly range from 6mm to 25mm, but we can extrude custom IDs/ODs and wall thicknesses. Colors, lengths, cut-to-length pieces and custom fittings are all available, with MOQ as low as 1 piece for prototyping.

Next step: Learn more about our liquid-cooling solutions for gaming PCs and AI servers.

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Question 6

What rubber materials can RESRUB extrude?

Accepted Answer

We extrude a wide range of rubber and plastic elastomers.

Our factory works with EPDM, silicone, NBR, CR, IIR, FKM, PVC and TPE/TPR/TPV — with silicone tubing, EPDM hose and TPV sealing strip as our three core product lines. This lets us match material to temperature, chemical exposure, hardness, color and cost requirements rather than forcing a one-size-fits-all choice.

Common materials and their best uses

EPDM is the workhorse for outdoor hoses, seals and coolant lines because of its water, ozone and UV resistance. Silicone handles extreme temperatures (-60°C to 200°C+) and is ideal for food-contact or medical tubing. NBR offers excellent oil and fuel resistance. PVC and TPE/TPR/TPV provide lower-cost, recyclable options for appliance seals and grips. FKM is used when aggressive chemicals or very high heat are involved.

Material selection support

If you are unsure which polymer fits your product, send us your drawing, target application and operating conditions. Our engineers can recommend the right compound, hardness (Shore A 20–90) and color, and we can produce small test samples for validation before volume production.

Next step: Need help choosing a material? Send your specs and we will recommend the best compound.

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Question 7

Are all dishwasher seals the same?

Accepted Answer

No - most dishwashers use two different door seals

Most types of dishwasher have two door seals: a three-sided upper door seal, and a lower door seal that runs along the bottom of the door.

Two common dishwasher seals

Upper door seal - three-sided, runs around the top and sides of the door.
Lower door seal - runs along the bottom edge of the door.

Seal sizes and profiles differ by brand and model. Send us your original seal or dimensions and we will match the right profile.

Find Your Dishwasher Seal

Question 8

Which is better EPDM or silicone coolant hose?

Accepted Answer

Both work well - choose by temperature and coolant loss priorities

Silicone tolerates much higher temperatures, while EPDM hoses show a lower coolant evaporation rate for better cooling efficiency.

EPDM vs silicone at a glance

Property	EPDM hose	Silicone hose
Max temperature	About -40°C—150°C	Up to 200°C (392°F); speciality grades reach 230°C (446°F)
Coolant evaporation	Lower - less evaporation, better cooling efficiency	Higher evaporation rate
Best for	Standard cooling systems, cost-sensitive projects	High-temperature and racing applications

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Question 9

How to choose suitable rubber materials?

Accepted Answer

Choose rubber materials by three key factors

The right rubber material depends on working temperature, chemical resistance, and physical properties.

Selection guide

Working temperature - EPDM suits high temperature and severe cold; NBR suits oil-resistant environments.
Chemical resistance - for oil or acid/alkali resistance, choose NBR or FKM.
Physical properties - for abrasion and weather resistance, CR and EPDM cover most mechanical and outdoor applications.

Not sure which material? Contact our technical team - we will recommend the best material for your application scenario and market demand.

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Question 10

What industries and products are RESRUB products widely used in?

Accepted Answer

RESRUB products serve 7+ major industries

Our rubber hoses, seal strips, and molded parts are widely used across multiple industries.

Industries and applications

Automotive - door/window sealing strips, wiper system water pipes.
Home appliances - dishwasher and oven door seals.
Electronics & communication - solar panel parts, PC/server liquid cooling hoses.
Containers - container lid, toolbox, and shipping container seals.
Power & communication cabinets - high-temperature, aging-resistant sealing strips.
New energy - components for EV and charging equipment.
Construction machinery - wear-resistant, pressure-resistant rubber parts.

Rubber seal strip for tool boxes and shipping containers

Rubber solar panel cushioning pad by RESRUB

Find Your Application Solution

Question 11

What types of products does your company mainly produce?

Accepted Answer

We mainly produce rubber hoses, seal strips, and custom rubber products

RESRUB specializes in rubber hoses, rubber seal strips, and other rubber, silicone, and plastic products.

Main product categories

Rubber hoses and tubing
Rubber seal strips and profiles
Silicone products
Plastic products

Available materials: EPDM, silicone, NBR, CR, IIR, FKM, PVC and TPE/TPR/TPV. Each material adapts to different working environments and technical requirements.

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