Backcover Gasket (06201C000) Molded from ASTM F1417 NBR rubber with vulcanization process, Shore A hardness 70±5, temperature resistance -30℃~120℃. API 7K compliant for mud pump fluid ends, compressive strength ≥30MPa. Salt spray test ≥1000h. Meets GB/T 528-2009 tensile standards. Sealing efficiency enhanced by 35%.
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