we will supply you contained 38% copper powder.Regarding Backing seals,there are two different type. non-copper powder and contained copper powder. Contained copper powder can reinforce heat dissipation.

GDK SEALS  is engaged in the seals production, R&D and trade for more than ten years, now we are  a manufacturer and exporter specialized in the research, development and production of engineering machine seals, and  already become the authorized the dealer for the SKF SEALS in China,meanwhile, supply with Japan seal kit, hydraulic breaker seal kits, excavator seal kits, cylinder bushing, pusher, Korean seal, diaphragm, excavator O-ring etc.

We are located in the biggest international machine market of guangzhou with convenient transportation. All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world for years.

Applying modern management mode and innovative marketing mode,  with consistent best quality, we offer our new and old customers the best timely and thoughtful services. Following the principle: to strive for survival by good quality, to win the market with well reputation, we are in pursuit of a broader development. GDK invites you to join us for a joint development and to create a new brilliant future!