Burker - Products

Introduction

Type

PTFE Wipers

-	Wiper Ring -type WA
-	Wiper Ring -type WB

PTFE Glide Seal Sets

-	Rod Seal Set -type RA
-	Piston Seal Set -type PB
-	Rod Seal Set -type RC
-	Rod Seal Set -type RL

PTFE Glide Seal Sets for O-ring fitting areas

-	Piston Seal Set -type PA
-	Piston Seal Set -type PB
-	Piston Seal Set -type PC
-	Piston Seal Set -type PD

PTFE Rotary Glide Seal Sets

-	Rotary Seal Set -type TR
-	Rotary Seal Set -type TP

Material

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Type > PTFE Glide Seal Sets for O-ring fitting areas > Piston Seal Set -type PA

Piston seal is suitable for bi-directional pressurization, hydraulic cartridge and spool valves such as control cylinders, servo-controlled systems, machine tools, and construction machinery. It offers low break-out and running friction to guarantee steady movement even at low speed or intermittent but frequent reciprocating action.

Application Range

Pressure	400bar
Temperature	-60 ~ 200
Speed	4 m/s
Material	Bronze filled PTFE

Other materials are available for specified conditions

Guidelines for the Selection of Special Sizes

unit: mm

Cylinder Bore			Groove Bottom	Groove Width	Radius	O-ring code
Da			Di	L	R	O-ring code
8	-	14.9	Da - 4.9	2.2	0.3	A
15	-	39.9	Da -7.5	3.2	0.5	B
40	-	79.9	Da ¡V 11.0	4.2	0.8	C
80	-	420.9	Da ¡V 15.5	6.3	1.2	D
133	-	329.9	Da ¡V 21.0	8.1	1.5	E
330	-	669.9	Da ¡V 24.5	8.1	1.5	F
670	-	1000.0	Da ¡V 27.3	9.5	1.5	G

How to order special size

Profile type	PA
Rod diameter	Di=100 mm
Groove bottom	Di= 84.5 mm
Material	31 (Material)
Order code	PA-100-31-D