145-200234-999 Polypak Seal Ring (2" I.D. x 2.75" O.D.), forged from PTFE+NBR compound material with carburized & quenched metal core (HRC58-62), API 7K compliant, pressure resistance ≥150MPa, salt spray tested 1000h corrosion-free for high-pressure mud pump sealing reliability.
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