Cork
Cork is the material of choice when vibration isolation, oil-resistant gasketing, or transformer cover sealing require a natural, compressible material with inherent damping properties that synthetic foams do not replicate. Plain pressed cork provides broadband vibration attenuation for general industrial equipment pads, while rubberized cork composites add oil resistance for transformer covers and precision industrial gasketing requiring tighter compression control. H-O Products carries cork from plain pressed sheet through rubberized and technical rubberized cork blends, and converts them to customer specification.
Plain Cork MS113
Plain Cork MS113 is a plain cork sheeting bound with polyurethane and composed of 0.5 mm cork granules, designed for no-skid, no-scratch protection of ceramic and porcelain products, spacer applications, and shipping glass "loose-light." It achieves compressibility of 35%–55% @ 100 PSI and recovery of ≥ 75% @ 100 PSI per ISO 7322, with a minimum specific weight of ≥ 160 kg/m³ and a tensile strength of ≥ 242 kPa (≥ 35.1 psi).
Key Properties
- Compressibility @ 100 PSI: 35% - 55% — ISO 7322
- Recovery @ 100 PSI: ≥ 75% — ISO 7322
- Tensile Strength: ≥ 242 kPa (≥ 35.1 psi) — ISO 7322
- Specific Weight: ≥ 160 kg/m³ — ISO 7322
- Cork Granule Size: 0.5 mm — —
- Boiling Water: No disaggregation — ISO 7322
Rubberized Cork BC351-207
Rubberized Cork BC351-207 is a natural cork and polymeric rubber composite sheeting (Cork Grade BC351, granule size 0.5–1 mm) providing a tough, high-wear material with excellent compression resistance and a high coefficient of friction. It delivers 110 psi min. tensile strength, compressibility of 20%–40% @ 400 PSI, and 70% min. recovery per ASTM F36, with a minimum density of 30 lb/ft³ per ASTM F1315. It is suited for gaskets, bumpers, shims, anti-skid applications, and glass wall assemblies.
Key Properties
- Compressibility @ 400 PSI: 20% - 40% — ASTM F36
- Recovery: 70% min — ASTM F36
- Tensile Strength: 110 psi min. — ASTM F152
- Density: 30 lb/ft³ min. — ASTM F1315
- Flexibility, Initial (F=5): No cracks — ASTM F147
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 — —
Technical Rubberized Cork DC100-314
Product Overview
Technical Rubberized Cork DC100-314 is a synthetic rubber-bound technical cork composite (Cork Grade DC100, granule size 0.5–2 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 -4°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: -4°F — —
- High Temperature Limit: 230°F — —
- Cork Granule Size: 0.5 - 2 mm — —
Technical Rubberized Cork SP52
Technical Rubberized Cork SP52 is a chloroprene rubber-bound technical cork composite (granule size .05/1 mm) designed for demanding flange gasket, oil-resistant seal, and special-profile applications. It achieves a durometer range of 46–66 Shore A, compressibility of 40%–60% @ 400 PSI, and recovery of 75% @ 400 PSI per ASTM F36. Density ranges from 480–720 kgm³. 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): 46-66 — ASTM D2240
- Compressibility @ 400 PSI: 40%-60% — ASTM F36
- Recovery @ 400 PSI: 75% — ASTM F36
- Low Temperature Limit: -40°F — —
- High Temperature Limit: 230°F — —
