Introduction
Type
Material
Download
Material
Material combinations of PTFE Glide Seals

code

PTFE compound

O-ring

Application

11

Virgin PTFE

NBR

Suitable for foodstuffs and pharmaceutical process

12

Virgin PTFE

FPM

Same as above but service temperature up to 200

21

Carbon filled PTFE

NBR

General application with excellent chemical resistance

22

Carbon filled PTFE

FPM

Same as above but service temperature up to 200

31

Bronze filled PTFE

NBR

Hydraulic, high pressure, wear resistance, good thermal conductivity

32

Bronze filled PTFE

FPM

Same as above but service temperature up to 200

 
Fitting instructions

The seal sets should be used together with suitable guide elements. The fitting areas must be cleaned and trimmed carefully before fitting. When fitting the PTFE Glide Seal sets, the O-ring should be placed in the groove first. In the case of inside sealing applications the sealing ring must then be pressed into a kidney shape with fitting pliers and inserted in its groove. In the case of outside sealing applications it must be expanded with a fitting sleeve and expansion mandrel and inserted in its groove.

A divided fitting area should be provided for rod seal sets and corresponding wipers up to a diameter of 30 mm. The sealing element should be restored to its original shape with a suitable calibration sleeve or calibration mandrel. The necessary fitting and calibration tools can be delivered on request.

 
Fitting Bevels and Surface Roughness

type

Fitting bevel

Ra / Rmax []

Seal gland

Gliding surface

Groove bottom

Groove flank

Cylinder bore

Rod, Shaft

Wiper

15-20

1.6 / 6.3

4 / 16

-

0.4 / 1.6

Seal set

20

1.6 / 6.3

4 / 16

0.6 / 2.5

0.4 / 1.6

Rotary seal set

15

2.5 / 10

0.4 / 1.6

-

0.4 / 1.6

Glide ring

15

1.6 / 6.3

4 / 16

-

0.4 / 1.6


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