Find Rubber Sheet by ASTM D2000 Callout
Enter an ASTM D2000 line callout — or build it segment by segment — and this tool shows you the in-stock rubber sheet that meets or exceeds the specification. It’s built for engineers, buyers, and procurement teams working from an RFQ or drawing that calls out a D2000 or MIL specification, so you can go straight from a callout to a product you can order, cut to length, with a Certificate of Conformance.
How to read an ASTM D2000 line callout
An ASTM D2000 line callout is a standardized code that describes what a rubber material must do, not which polymer it is made from. Because it is performance-based, a single callout can be satisfied by more than one compound which is exactly what this finder resolves. Take a common example, M2BG710 A14 EO34, and read it left to right:
- M — the values are metric (SI) units.
- 2 — the grade number. Grade 1 covers only the basic properties; grades of 2 and up add the suffix tests listed after the main code.
- B — the Type, which sets heat resistance. Type B is tested at 100 °C.
- G — the Class, which sets oil resistance. Class G allows a maximum volume swell of 40% in reference oil.
- 7 — the hardness: 70 Shore A durometer (±5).
- 10 — the minimum tensile strength: 10 MPa.
- A14, EO34 — suffix requirements. Each is a specific test: A14 is a heat-aging requirement, EO34 an oil-immersion requirement. The letters name the property and the digits fix the test method and temperature.
Put together, M2BG710 describes a 70-durometer nitrile-class sheet with good oil and fuel resistance that has also passed defined heat-aging and oil-immersion tests. The finder reads each of these segments and returns the compounds qualified to satisfy them.
Type — heat resistance
The Type letter is set by the temperature at which the material is heat-aged:
| Type | Test temperature |
|---|---|
| A | 70 °C |
| B | 100 °C |
| C | 125 °C |
| D | 150 °C |
| E | 175 °C |
| F | 200 °C |
| G | 225 °C |
| H | 250 °C |
| J | 275 °C |
| K | 300 °C |
Class — oil resistance
The Class letter is set by the maximum volume swell allowed after immersion in reference oil — a lower swell means greater oil resistance:
| Class | Max volume swell |
|---|---|
| A | No requirement |
| B | 140% |
| C | 120% |
| D | 100% |
| E | 80% |
| F | 60% |
| G | 40% |
| H | 30% |
| J | 20% |
| K | 10% |
Together the Type and Class letters point to a polymer family. BG and BF indicate nitrile (NBR); BC indicates neoprene (CR); CA indicates EPDM; AA covers general-purpose rubbers such as SBR and natural rubber.
How to use this finder
- Paste a callout. If you have the full line callout from an RFQ or drawing, paste it into the decode box and the tool breaks it into its segments automatically.
- Or build it. Don’t have the whole string? Select only the segments you know — polymer, durometer, Type, Class, or individual suffixes. Partial specifications are fine.
- Review the matches. Products that satisfy your callout appear instantly, tagged Meets spec or Exceeds spec, each linking to the product page with live pricing.
- Don’t see a match? If no stocked compound covers your spec, request a quote and we’ll source it to specification.
Rubber sheet compounds we stock
Our in-stock sheet covers the four commodity polymers that satisfy the large majority of everyday D2000 and MIL callouts, in 60 and 70 Shore A durometer, 1/16″ and 1/8″ thickness, 36″ width, cut to the length you order:
- Nitrile (NBR) — supplied to M2BG610 and M2BG710. Oil, fuel, and hydraulic-fluid resistance; the default choice for sealing against petroleum-based fluids.
- Neoprene (CR) — supplied to M2BC610 and M2BC710. Weather, ozone, and moderate oil resistance; a general-purpose gasket sheet.
- EPDM — supplied to M2CA610 and M2CA710. Weather, ozone, steam, and hot-water service; not for petroleum oils.
- SBR — supplied to M1AA610 and M1AA710. Economy general-purpose sheet for low-pressure gasketing and pads.
Need silicone, Viton (FKM), or a compound outside this range? We source to spec — request a quote with your callout.
Frequently asked questions
What is an ASTM D2000 line callout?
An ASTM D2000 line callout is a standardized code that specifies a rubber material’s performance requirements in a single string, such as M2BG710 A14 EO34. Instead of naming a polymer, it defines the properties the material must meet: heat resistance (the Type letter), oil resistance (the Class letter), hardness, minimum tensile strength, and any additional tests written as suffix codes. Because it describes performance rather than a specific recipe, one callout can be met by several different compounds. That is why sourcing sheet from a callout is a matching problem — finding the stocked compound whose certified properties satisfy every part of the requested specification — which is what this finder does.
What does the callout M2BG710 mean?
M2BG710 breaks down as follows: M means the values are metric; 2 is the grade; B is the Type, tested for heat resistance at 100 °C; G is the Class, allowing at most 40% volume swell in oil; 7 sets the hardness at 70 Shore A; and 10 sets the minimum tensile strength at 10 MPa. In practical terms, that describes a 70-durometer nitrile (NBR) rubber sheet with good resistance to oils and fuels. Any suffix codes that follow — like A14 or EO34 — add specific heat-aging and oil-immersion tests the material must also pass.
What rubber compound is oil and fuel resistant?
Nitrile (NBR) is the standard oil- and fuel-resistant sheet rubber, corresponding to the BF and BG Type/Class designations in ASTM D2000. It resists petroleum-based oils, fuels, and hydraulic fluids, which makes it the default gasket and sealing material wherever those fluids are present. Our nitrile sheet is supplied to M2BG610 (60 durometer) and M2BG710 (70 durometer). Nitrile is not suitable for ketones, strong acids, ozone, or prolonged weathering — for outdoor or ozone exposure without oil contact, neoprene or EPDM is the better choice.
How do I find rubber sheet by a MIL specification?
Many military specifications map onto the ASTM D2000 system or onto a class and grade you can match directly. For example, MIL-DTL-6855 Class 1 corresponds to an oil-resistant nitrile, and Class 2 to a general-purpose neoprene. In this finder you can start from a MIL spec using the quick-select buttons, which set the equivalent Type and Class for you, or enter the D2000 attributes directly. If you are working from a MIL spec we don’t list or aren’t sure of the equivalent, request a quote with the specification and we’ll identify and supply the correct material.
Can you supply a compound or specification you don’t stock?
Yes. The eight compounds shown in the finder are our stocked commodity range, but we source specialty materials — including silicone (VMQ), fluorocarbon (Viton/FKM), and higher-temperature or chemical-resistant grades — to specification. If your callout returns no in-stock match, use the request-a-quote link and include the full line callout or MIL spec. Providing the complete callout lets us qualify the right compound and confirm it meets every requirement before you order.
Do you provide a Certificate of Conformance?
Yes. A signed Certificate of Conformance is available with every order, and each stocked compound has a technical data sheet documenting the properties it is supplied to. For specification-driven work where traceability matters, the callout on the product page and the accompanying documentation give you the paper trail your quality process requires.