3115192602 Hydraulic Return Oil Diaphragm Replacement Diaphragm Kit for Rock Drill Machine Mining Machinery Accessories

Product details

Integrally high-temperature vulcanized with special oil-resistant rubber featuring dense uniform layers. It withstands long-term impact of hydraulic return oil, free of bulging and tearing under repeated high-pressure expansion, maintaining stable return oil pressure.

Thin & highly elastic diaphragm structure deforms rapidly under pressure and resets instantly after pressure release. It delivers lag-free hydraulic return signal transmission, precisely matching drill rig oil circuit circulation and boosting impact working efficiency.

Integrated widened sealing lip around the edge fits valve cavity bases tightly, eliminating gaps to block hydraulic oil leakage and pressure loss, cutting unexpected equipment downtime for maintenance.

Modified anti-aging rubber formula prevents swelling and hardening after long-term immersion in hydraulic oil. It resists mine mud, dust and temperature variation without cracking, suitable for both underground and open-pit drilling rigs.