SBR Rubber Sheet
SBR rubber sheets are a versatile type of hard and robust synthetic rubber. It is made from a styrene and butadiene copolymer. This material has a superior crack and abrasion resistance. For more demanding applications, this rubber sheet is tougher and more resilient than ordinary SBR.
- Various sizes available
- Color: Black, red, white, etc.
- Gauge: 1/8”, 1/4”, 1/2”, 1”, 1.5”, and more
- Available in 60A or 70A durometer
- Low compression set
- Specially compounded to resist damaging outdoor factors, including UV rays and ozone
Your Reputable SBR Rubber Sheet Supplier in China
SBR rubber sheet is also known as styrene-butadiene rubber. It is a tough material with outstanding tensile strength, heat resistance, and friction resistance. In terms of mechanical attributes, temperature resistance, and aging, this polymer outperforms natural rubber. It features a firm surface that is resistant to wear and allows for good penetration. These offer high insulation and shock absorption suitable for indoor/outdoor rubber applications.
Additionally, it operates between -30 and +120 degrees Fahrenheit and has a good dynamic and rebound characteristics. It exhibits good resistance to moisture, alkalis, acids, brake fluids, and salts.
Weprofab SBR rubber sheets are commonly utilized in food processing facilities because they are food-grade certified, non-toxic, and non-allergenic. As a leading rubber manufacturer in China, Weprofab has the ability to manufacture SBR rubber sheets specifically to the needs of the customer. We will offer flexible MOQ and OEM support at reasonable prices. Please don’t hesitate to message us!
SBR Rubber Sheets Potential Applications
The primary use of SBR Rubber Sheets includes sealing, insulating, isolating, and protecting a variety of materials. It is intended to be used in handling or storage applications as a flexible strip, pad, or gasket.
- Food grade scrapers
- Insulating strip, pulley lagging
- Used in the production of vehicle tires
- Linings and flange gaskets on pipes and tanks
- Bumper protection strips, transfer, and joining sleeves
- Blast curtains, bumpers
- Conveyor skirting, belt wipers
- Street sweeper and snowplow blades
Yes.
Our SBR Rubber sheeting is often provided in a roll, but with the right tools, it can be readily cut into sheets, strips, or gaskets depending on your requests.
| Properties | EPDM | SBR |
| Shore A hardness | ± 65 | ± 55 |
| Density | ± 1500 kg/m³ | ± 980 kg/m³ |
| Impact resistance | High | Medium |
| UV light resistance | High | Low |
| Abrasion resistance | High | Low-medium |
| Flammability | Limited contribution | Easily flammable |
| Ozone resistance | High | Low |
| Tensile properties | High | Medium |
| Slip resistance | Good | Good |
| Bond to pre-polymers | High | Medium |
- Broad accessibility
- The capacity for high filler amounts
- Cost-effective compared to all other synthetic rubbers
- Properties overall, based on cost and performance
No. Standard SBR rubber sheet can swell and lose reliable sealing performance when your part contacts oil or gasoline. Choose it for general mechanical service without petroleum exposure. If oil contact is unavoidable, specify nitrile rubber sheet and confirm its compatibility with your exact fluid before ordering.
Cloth-inserted SBR gives your part better dimensional stability than standard unreinforced SBR. The embedded fabric limits stretching when the sheet is clamped or mechanically fastened. Choose it when your gasket must retain its shape under load; use standard SBR when your design requires greater flexibility.
Do not approve a standard SBR rubber sheet for continuous outdoor exposure from the polymer name alone. Published SBR guides rate its sunlight and ozone resistance as poor, although a specially protected compound may perform better. If your part will remain outdoors, require an ozone result such as ASTM D1149 or ISO 1431-1 for the proposed grade and define the exposure time and acceptance criterion. Without that compound-level evidence, evaluate EPDM instead for long-term UV and ozone exposure.
No. An SBR rubber sheet is not food-contact compliant simply because the supplier describes it as non-toxic or food grade. For repeated food contact in the United States, ask for documentation covering the exact production compound under 21 CFR 177.2600, including the applicable extractive limits. Approve the batch against that compound-specific declaration rather than a general SBR certificate.
A 1 m × 10 m × 10 mm SBR rubber sheet roll weighs about 160 kg when the production-grade density is 1,600 kg/m³: 1 × 10 × 0.010 × 1,600 = 160. This is the net rubber weight before the core and packaging are added. Use the ordered compound’s density and thickness tolerance when planning freight and mechanical lifting.
For a smooth flange with a high seating load, use 1.5 mm SBR rubber sheet as the first thickness to evaluate. For a lower-pressure flat-face joint with minor surface irregularity, 3 mm is a more practical starting point. Do not move directly to 5 mm because extra thickness can increase creep and lateral movement. Confirm the final choice with your flange drawing, operating pressure and a compression test on the proposed production compound.
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How to Specify SBR Rubber Sheet for Your Industrial Part
An SBR rubber sheet specification can look complete while leaving the most important decisions open. The same request can still lead two suppliers to propose different compounds, surfaces, tolerances, and test evidence. Those differences affect whether the finished part fits, stays in place, and remains consistent with the approved sample. SBR is therefore the start of the specification, while the part function, working conditions, measurable requirements, and approval evidence complete it.
Confirm SBR Is Suitable Before You Specify the Grade
SBR is often shortlisted when a general-purpose part needs a practical balance of cost and mechanical performance. That starting point makes sense only when the service environment suits the proposed compound. An old drawing that says “SBR” is not enough reason to keep it if the fluid, weather, or temperature conditions have changed.
A mechanical property sheet cannot establish fluid compatibility. If oil or fuel contact is present, or if the part will remain outdoors with a defined ozone or weathering requirement, compare the proposed compound with the actual exposure. ASTM D471 provides comparative testing for the effect of liquids, but even that controlled test may not directly predict performance in every finished part. When the proposed SBR grade cannot support the service conditions with relevant data, evaluate NBR, EPDM, CR, or another elastomer instead of assuming a harder or thicker SBR sheet will compensate.
The polymer family comes first; the exact grade comes next. Changing thickness or hardness can alter fit, compression, and stiffness, but it does not correct a mismatch between the compound and its environment.
Define the Part Function Before You Choose the Sheet Grade
The first question is what the finished part must do. A sheet compressed between two surfaces has a different acceptance question from a pad exposed to repeated impact or a strip that rubs against moving material. An application name alone is not enough. The RFQ should explain the rubber’s task and what failure would look like in the assembly.
Useful RFQ data describes the actual conditions instead of relying on broad labels such as “industrial use.” It names the liquid or cleaner, its concentration, the normal and peak temperature, and whether contact is continuous or occasional. It also shows whether the part remains under a static load, flexes, slides, or receives repeated impact. For an outdoor part, the exposure period and required evidence belong in the specification; the polymer name alone does not answer the question.
| Buyer input | Why it changes the specification | Evidence to confirm |
|---|---|---|
| Primary part function | It determines which properties can affect acceptance | Drawing, assembly description, or marked sample |
| Actual exposure | A general material name cannot represent every fluid, temperature, or environment | Compound data and application-specific test results |
| Load and movement | Static compression, sliding, flexing, and impact create different failure risks | Test method matched to the service condition |
| Failure to avoid | Swelling, tearing, permanent deformation, or dimensional movement require different controls | Agreed acceptance criterion |
| Finished-part geometry | Sheet properties alone do not confirm the fit of a cut component | Finished dimensions and measurement method |
This information helps the supplier screen a proposed grade. It also gives your engineering and quality teams a clear reason to accept or reject the sample.
Specify Thickness, Hardness, Finish, and Tolerance Together
Nominal thickness affects the space occupied by the part and, in compressed assemblies, the amount of deflection available. It does not define the acceptable thickness tolerance. A usable specification states the nominal dimension, the permitted variation, where it will be measured, and whether the requirement applies to the roll, an individual sheet, or the finished cut part.
Hardness needs the same discipline. ASTM D2240 provides a method for measuring durometer hardness under defined conditions. The result is useful for material control, but it does not predict tensile strength, abrasion behavior, or service life by itself. A workable purchase specification lists the scale, target range, and test method instead of requesting a “hard” or “soft” sheet.
The required surface should also be explicit. Smooth, matte, or fabric-impression surfaces can change how the part contacts a mating face, moves against another surface, or receives adhesive. A surface description should therefore accompany the thickness and hardness requirements when it affects assembly or inspection.
ASTM D3767 describes methods for measuring rubber-product dimensions, but it does not choose the correct tolerance for your part. The measurement method and the commercial or project-specific tolerance still need to be agreed with the supplier. Separating raw-sheet tolerances from finished-part tolerances prevents a roll specification from being mistaken for a die-cut component specification.
Ask for Tests That Match the Part’s Failure Risk
A useful test plan answers a purchasing or approval question. It should not be a long list of rubber standards copied into every RFQ.
- Durometer hardness: ASTM D2240 can help confirm that the proposed production material remains within the approved hardness range. It cannot replace tests related to the part’s actual failure risk.
- Tensile strength and elongation: ASTM D412 can be used to compare these properties when the specimen, conditioning, temperature, and test rate are comparable. A higher tensile value alone does not prove better performance in the assembly.
- Compression set: ASTM D395 is relevant when the part remains under compressive stress and recovery matters to its function. It should not become a default requirement for a part that is not approved on compression behavior.
- Dimensional inspection: The inspection plan works better when it identifies the dimensions, measurement locations, instruments, and condition of the sample. A standard method is useful only when both sides interpret the result in the same way.
If your drawing already contains an ASTM D2000 callout, send the complete designation and any suffix requirements. Do not translate it into a short description such as “60 Shore A SBR,” because that can discard type, class, and additional performance requirements. The complete callout should remain the purchasing reference. The supplier’s response should identify the proposed compound and show how the returned data correspond to it. ASTM D2000 is a material classification system developed primarily for automotive rubber products; it is not a universal certificate for every SBR sheet.
The most useful test plan includes only the tests that can change an approval decision. This keeps the inspection plan focused and makes exceptions easier to investigate.
How to Keep Production Consistent with the Approved SBR Sample
A sample is most useful when its approval record can become part of the production order. A practical record identifies the supplier’s grade or product code, the drawing revision, finished dimensions, tolerances, hardness range, surface, cut-edge condition, and any application-specific result. If one of these items changes before production, the earlier sample may no longer represent what you are buying.
Keep three types of numbers separate. A typical value describes what a material commonly achieves, but it may not be a guaranteed limit. A specification limit defines the accepted range. A batch result reports what was measured on the supplied material. Mixing these categories can make a data sheet appear to prove compliance when it only provides background information.
The sample record, purchase order, and incoming-inspection document should carry the same acceptance language. That common language should identify which evidence accompanies the shipment and which checks your team repeats. Sampling frequency and rejection rules should come from your quality requirements or a written agreement with the supplier; they should not be invented from the SBR name.
Final Thoughts: Approve the Exact SBR Grade, Not Just the Polymer Name
SBR can be an economical candidate for many general industrial parts, but the approval decision belongs to the proposed production grade and finished component. The most reliable path is to confirm that the polymer fits the environment, freeze the measurable requirements, connect the evidence to the likely failure risk, and apply the same criteria to the sample and production batch. When requesting a quotation from Weprofab, include the drawing, working conditions, quantity, delivery format, and acceptance requirements so the proposed grade and remaining sample-validation points can be confirmed.
