Rounded U-Spring Style PTFE Seals

Radial Seals

TYPE M20

TYPE M21

Radial seal for dynamic applications. For rod and piston seals with low to medium pressure and/or speed. This spring has a low load and high deflection which provides low friction sealing and compensates for minor eccentricity or misalignment.

TYPE M20: Standard profile.
TYPE M21: As M20 but with extended heel for high pressure.

TYPE M22

TYPE M23

As Type M20 but for reciprocating motion.

TYPE M22: Standard profile.
TYPE M23: As M22 but with extended heel for high pressure.

TYPE M24

TYPE M25

As Type M20 but for reciprocating motion only. Scraper on outside diameter.

TYPE M24: Standard profile.
TYPE M25: As M24 but with extended heel for high pressure.

Axial Seals

TYPE M28

TYPE M29

TYPE M28: Axial seal for static or dynamic applications as in type M20. Inside face seal.
TYPE M29: Axial seal for static or dynamic applications as in type M20, outside face seal.

Radial Seal Hardware Design

Cross Section	H	T1	L +0.3/-0	L1 +0.3/-0	L2 +0.3-0	K	E NOM
1	1.42/1.47	0.05	2.4	3.8	5.3	3.5	0.1
2	2.26/2.31	0.05	3.6	4.6	6.2	4.5	0.13
3	3.07/3.12	0.05	4.8	6.0	7.7	6.0	0.15
4	4.72/4.78	0.06	7.1	8.5	10.8	7.5	0.18
5	6.05/6.12	0.07	9.5	12.1	14.7	8.5	0.2
6	9.48/9.53	0.08	13.5	15.8	18.0	10.0	0.24

U Spring Diagram diagram

Axial Seal Hardware Design

Cross Section	H	T2	L3 Min
1	1.42/1.47	0.13	2.4
2	2.26/2.31	0.13	3.6
3	3.07/3.12	0.15	4.8
4	4.72/4.78	0.15	7.7
5	6.05/6.12	0.20	9.5
6	9.48/9.53	0.25	13.5

Helicoil Spring diagram

Order Example5 diagram

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