Dimensions & Geometry
The document specifies the dimensions and tolerances for a product. The outer height is 100 mm with a tolerance of ±5%, width is 95 mm with a tolerance of ±5%, bore is 60 × 48 mm with a tolerance of ±10%, length is 10,000 mm with a tolerance of ±30 mm, and the nominal weight is 8 kg/m with a tolerance of ±10%.
Material Properties
The base material is EPDM (Ethylene Propylene Diene Monomer), conforming to ASTM D2000 Type M. It has a hardness of 70–78 Shore A, targeting 75. The tensile strength is 7 MPa, elongation at break is 250%, and compression set is 35% after 22 hours at 70°C. It shows no cracks under ozone resistance testing (50 pphm, 40°C, 72h, 20% strain). The thermal range is from -40°C to +90°C, with a short-term tolerance up to +110°C. The density ranges from 1.15 to 1.25 g/cm³.
Performance & Environmental Resistance
The material is UV and ozone resistant due to stabilizers, exhibits excellent resistance to seawater and weathering, and has good resistance to dilute acids and alkalis. However, it is not recommended for exposure to oil or fuel.
Finish & Color
The product is black with a smooth extrusion skin finish. It includes UV stabilizers with 30 phr carbon black.
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