Back-up rings are the most common anti-extrusion devices in dynamic sealing. They provide simple solutions to safely increase system function by positioning a more robust material adjacent to the extrusion gap, taking the seal's place and providing a barrier against high pressures. Back UPS can be used to offset the reduced pressure rating effects of wear rings or to improve seal against pressure spikes, or to ensure seal performance at higher tempertures.
DEF Seals manufacture high-quality back-UPS to meet harsh sealing environment. Our seals are one of the best choice of spare parts of Hitachi, Kobelco, Kamastu, Caterpillar.
Please check the catagory for detail.
Virgin PTFE, PTFE+bronze, PTFE+carbon, PTFE+glass, PTFE+graphite, POM, etc.
Brown, Green, White, Black, Blue, etc.
This seal can be provided with slash cut or no cut.
|Method of payment ||T/T (bank account, paypal,western union)|
|Delivery time||5 to 7 working days, 2 days for in stock|
|Packaging||plastic film for inner packaging and cartons for outer packaging|
|Export market||South Asia, Southest Asia, Europe, South America, North America, Africa, Middle East, Australia|
1.How can you get sample free?
Answer: Sample free to you but your side pay the freight charge.
2.Could I make it according to my structure drawing?
Answer: Of course, we can make from your structure drawing.
3.Why choose Guangdong DEF Seals solutions Co., Ltd ?
1.Professional and reliability.
2.Complete production line, quickly delivery.
3.Advanced equipments, high quality and competitive price.
4.We have a heart like fire.
5.We are ready to serve you all the time.
Tel: 86-769-82224518 Fax:86-769-83260340
Add: Xialingbei Industrial Park, Liaobu Town, Dongguan City, Guangdong Province, China 523410