NBR or FKM O-Ring Set with PTFE Back-up Ring for Chemical Pumps and Valve Sealing

• Customization: Available
• Material: PTFE
• Application: High-Pressure Hydraulic System
• Model NO.: PTFE Back-up Ring
• Type: Anti-Extrusion Ring
• Performance: Wear
• Shape: O-Ring
• Standard: Standard
• OEM/ODM: Available. According Your Drawing or Sample.
• Delivery Time: Generally 3-15days
• Feature: Resistant to Heat, Oil, Fatigue, Aging and Fricti
• Model No.: PTFE Back-up Ring
• Transport Package: Box
• Specification: All sizes
• Trademark: zheng mai
• Origin: Hebei, China
• HS Code: 4016931000
• Production Capacity: 200000pieces/Year
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 50.000kg

Product Description

Specification

Property	NORM	VALUE
Density	ISO1183	2.14-2.2
Tensile strength at break(Mpa)	ISO527	18-30
Modulus of elasticity	ISO527	0.35-0.5
Elongation at break	ISO527	150-350
Shore D	DUROMETER	52
Temperature range	/	-196-260
Coefficient of linear thermal expansion	ISO11359	1

PTFE is a high-performance engineering plastic with many excellent properties. PTFE retaining rings have the following characteristics:
1. Excellent corrosion resistance
It can resist the erosion of most chemicals, including strong acids, strong alkalis, organic solvents, etc. It can maintain stable performance in various harsh chemical environments and extend the service life of the equipment.
2. Extremely low friction coefficient
This makes it play a good role in reducing friction between moving parts, reducing energy loss and wear. Whether on a high-speed rotating shaft or in a reciprocating mechanism, PTFE retaining rings can provide smooth operation.
3. Good high temperature resistance
It can be used in a wide temperature range and can generally remain stable between -180ºC and +260ºC. This makes it suitable for various high and low temperature working occasions.
4. Self-lubrication
No need to add additional lubricant, it can maintain good lubrication. This not only reduces maintenance costs, but also avoids the impact on the working environment caused by lubricant contamination.
5. Good sealing
PTFE retaining rings can effectively prevent the leakage of fluids or gases and ensure the sealing of the system. It can be used in conjunction with other sealing elements to form a reliable sealing structure.
In practical applications, PTFE retaining rings are widely used in chemical, mechanical, electronic, aerospace and other fields. For example, in valves, pumps, compressors and other equipment, PTFE retaining rings can play a role in sealing, supporting and guiding to ensure the normal operation of the equipment.

Product Description

Company Profile

FAQ

FAQ

1.Why are more and more customers choosing Xingtai Zhengmai Rubber Technology Co., Ltd.?
We specialize in manufacturing and exporting high-quality sealing products. Choosing us means peace of mind.
We offer a wide range of seals in various types, sizes, and specifications, covering high-precision mechanical components. One-stop sourcing saves you time, effort, and cost.
With over 20 years of experience, we have a strong R&D team and advanced equipment, making us one of the top domestic seal manufacturers.
We provide complete sealing solutions, from design, mold development, vulcanization, trimming, inspection to packaging. The entire process is efficient and ensures consistent quality.
2. Are you a trading company or a manufacturer?
We are a professional seal manufacturer with more than 20 years of experience.
3. What is your packaging method?
50 or 100 pieces per bag, 15 or 30 bags per carton.
Customized packaging is also available upon request.
4. What is your delivery time?
1–2 days if the items are in stock.
10–15 days if out of stock but mold is available.
25–30 days if out of stock and mold needs to be developed.
5. Can you produce according to samples?
Yes. We can analyze your sample, develop the mold, and proceed with production.
6. How do you ensure long-term cooperation with customers?
We continuously improve process control and product quality, reduce operating costs, and offer competitive prices to maximize customer benefits.
We treat every customer with sincerity—no matter the order size, we provide full services and one-stop sealing solutions to support long-term cooperation.