PTFE Backup Ring and Teflon Washer Used for Static Sealing

• Material: PTFE
• Application: Valve
• Type: Stationary Seal
• Performance: Corrosion
• Shape: O-Ring
• Standard: Standard, Nonstandard
• Model NO.: PTFE
• Density: 2.1-2.3G/Cm3
• Tensile Strength: 15MPa
• Elongation at Break: 150%
• Temperature Range: -196 to 260 Celcius Degree
• Transport Package: Carton
• Specification: customized
• Trademark: HIGHDOM
• Origin: Hunan China
• HS Code: 3904610000
• Production Capacity: 300000PCS/Month

Product Description

                                           TEFLON PTFE Backup Ring and PTFE Washer and PTFE O Ring

 

PTFE backup ring are used for static and dynamic applications. It's better used for static sealing applications with corresponing O-ring.

The use of PTFE backup ring will help control O-ring extrusion in high pressure applictions. PTFE backup rings are compatible with all hydraulic fluids,since they are virtually chemically inert,and also can be used in applications involving elevated operating temperature conditions.In addition,PTFE backup rings can greatly improve O-ring performance and extend service life, even if extrusion does not present a problem.

 

We manufacture various kinds of PTFE seals include:

O-rings, back-up ring, guide/bearing ring, piston ring. rotary ring, valve seats, dipahragms, etc.

 

Material range:

100%virgin ptfe for light and medium load requirements.

 PTFE with filler( Glass/Graphite/Carbon/Bronze)for greater load requirements.
 

Virgin PTFE	100% PTFE
Filled PTFE	Inorganic filler	Glass fiber, Graphite, Bronze, Carbon fiber, MoS2
	Organic filler	Polyimide, Aromatic Polyester, Polypheylene Sulfide

Depending on applications, PTFE can be mixed with fillers to meet the requirements of application in order to provide the optimum sealing perperties.

Hongda is a leading supplier of high-quality PTFE gaskets, seals, washers,valve seats and insulators.Hongda specializes in precision PTFE gaskets, PTFE seals, PTFE washers, PTFE valve seats and PTFE insulators for a wide range of industries and applications.

PTFE gaskets or PTFE seal gasket are available in a range of grades to suit various sealing applications, providing exceptional resistance to chemicals, high dielectric strength and a broad operating temperature range. They also offer effective resistance to moisture absorption, corrosion and hydrolysis, and have an extremely low coefficient of friction, making them a popular option as a seal in rotary or linear movement applications.

 

Our most common grades are virgin PTFE and expanded virgin PTFE. Both comply with current FDA regulations and, as such, are frequently used in the food, drink and pharmaceutical industries. Expanded Virgin PTFE are popular for use on delicate, worn or damaged flanges due to increased compressibility over the standard virgin grade. Many other grades with additional fillers can be supplied including; bronze, carbon, glassfiber,graphite.... 

 

At Hongda, we have the capability to cut PTFE gaskets, seals and washers to precise tolerances and can fulfil single or large volume requirements utilising in-house CNC machinery. We can manufacture dovetail, picture frame or standard flange gaskets and have the ability to work to bespoke dimensional drawings if required.
 

Key Features

• Exceptional resistance to chemicals, with the exception of some alkali metals (grade dependent).
• Very low coefficient of friction.
• Can operate at extremely low and high temperatures.
• Excellent resistance to corrosion and hydrolysis.
• Offers very low moisture absorption.
• Provides excellent dielectric strength.
• Not suitable for use with highly abrasive materials.
• Popular gasket material in the chemical, food and pharmaceutical sectors.