Technical Rubberized Cork DC100-312
Technical Rubberized Cork DC100-312 is a synthetic rubber-bound technical cork composite (Cork Grade DC100, granule size 1–2 mm) designed for demanding flange gasket, oil-resistant seal, and special-profile applications. It achieves a durometer range of 55–75 Shore A, compressibility of 25%–45% @ 400 PSI, and recovery of 70% min per ASTM F36. The material is rated from -40°F to 230°F and provides controlled fluid resistance to petroleum oils and fuel per ASTM F146.
Key Properties
- Durometer / Hardness (Shore A): 55-75 — ASTM D2240
- Compressibility @ 400 PSI: 25%-45% — ASTM F36
- Recovery: 70% min — ASTM F36
- Low Temperature Limit: -40°F — —
- High Temperature Limit: 230°F — —
Cork Granule Size: 1-2mm — —
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Material / Substrate | Technical Rubberized Cork | — |
| Color | Natural | — |
| Binder | Synthetic Rubber | — |
| Cork Grade | DC100 (312) | — |
| Cork Granule Size | 1-2mm | — |
| Thickness | 1/32″, 1/16″, 3/32″, 1/8″, 3/16″, 1/4″ | — |
Mechanical Properties
| Property | Value | Test Method |
| Durometer / Hardness (Shore A) | 55-75 | ASTM D2240 |
| Compressibility @ 400 PSI | 25%-45% | ASTM F36 |
| Recovery | 70% min | ASTM F36 |
Thermal Properties
| Property | Value | Test Method |
| Low Temperature Limit | -40°F | — |
| High Temperature Limit | 230°F | — |
Aging Performance — Fluid Immersion (ASTM F146)
| Property | Value | Test Method |
| Volume Change After Aging, ASTM #1, 70 Hours @ 212°F | -10% to +20% | ASTM F146 |
| Volume Change After Aging, Fuel A, 22 Hours @ RT | 0% to +30% | ASTM F146 |
| Volume Change After Aging, IRM 903, 70 Hours @ 212°F | 0% to +80% | ASTM F146 |
- Flange gaskets in industrial piping and equipment requiring oil-resistant, compressible cork composite
- Oil-resistant seals and gaskets in automotive and industrial assemblies with petroleum fluid exposure
- Special shapes and profiles for precision gasketing requirements across a broad temperature range
- Anti-skid and high-friction sealing pads in industrial equipment assemblies
- General technical gasketing applications requiring durable cork/rubber composite performance
Common industries: Industrial equipment, automotive, oil and gas, piping systems, general manufacturing.
Technical Rubberized Cork DC100-312 is a synthetic rubber-bound cork composite at 55–75 Shore A, formulated for demanding technical gasketing applications including flange gaskets, oil-resistant seals, and special shapes or profiles for specific engineering requirements.
The DC100 series represents a higher-performance tier of rubberized cork engineered for broader temperature service (-40°F to 230°F) and quantified fluid resistance, distinguishing it from commercial-grade rubberized cork materials. Cork Granule Size of 1–2 mm is the coarsest in the Technical Rubberized Cork range, contributing to its firm but compressible profile with a high coefficient of friction.
Fluid aging per ASTM F146 shows volume change of -10% to +20% after ASTM #1 oil (70 hours @ 212°F) and 0% to +30% after Fuel A (22 hours @ RT). IRM 903 oil immersion (70 hours @ 212°F) produces 0% to +80% volume change, indicating more significant swelling in severe oil environments. The material is durable and economical for a wide variety of cork/rubber composite applications.
What differentiates Technical Rubberized Cork DC100-312 from the DC100-314 and SP52 grades?
Technical Rubberized Cork DC100-312 uses the coarsest cork granule size in the Technical Rubberized Cork series at 1–2 mm and provides the broadest low-temperature service limit at -40°F — significantly lower than the DC100-314 grade (-4°F). It shares the same synthetic rubber binder, durometer range (55–75 Shore A), and compressibility profile as DC100-314, making granule size and low-temperature performance the primary differentiators when selecting between the two DC100 grades.
Why is compressibility an important property for technical cork composite gaskets?
Compressibility determines how much the gasket deflects under a given seating load, which governs how well it conforms to flange faces or mating surfaces to create a seal. Too little compressibility means the gasket cannot fill surface imperfections; too much means it may extrude or bottom out under bolt torque. Technical Rubberized Cork DC100-312 achieves 25%–45% compressibility @ 400 PSI per ASTM F36, providing a controlled deflection range suited for demanding flange and oil-resistant gasket applications.
What is the service temperature range for Technical Rubberized Cork DC100-312?
Technical Rubberized Cork DC100-312 has a low temperature limit of -40°F and a high temperature limit of 230°F, as listed on the TDS.
Is Technical Rubberized Cork DC100-312 suitable for oil and fuel contact environments?
Yes. The TDS provides fluid aging data per ASTM F146 confirming controlled volume change in ASTM #1 oil (-10% to +20%), Fuel A (0% to +30%), and IRM 903 oil (0% to +80%) exposure. No specific compliance standards are cited on the TDS.
How should Technical Rubberized Cork DC100-312 be specified?
Specify grade (Technical Rubberized Cork DC100-312), thickness, dimensional tolerances, and finished format.
