U Cups or Lip Seals

  • U-Cups are designed for dynamic reciprocating applications up to 1250 PSI
  • U-Cups have longer sealing life than O-Rings due to lower friction
  • Also available in non symmetrical Rod and Piston configurations
  • Polypaks® are energized by an O-Ring to provide sealing force at low pressure
  • U-Cups can be designed for use in some reciprocating and rotary applications
  • Custom Lip Seals can be designed to perform in non-standard existing grooves

RUBBER U-CUPS and LIP SEALS

FOR BASIC HYDRAULIC, PNEUMATIC AND OTHER DYNAMIC APPLICATIONS

STANDARD RUBBER U-CUP CONFIGURATIONS

Highest Availability in 70 durometer Nirtile but available in any material.
Angled and Straight Lip styles are vitually interchangeable in basic applications
Angled Lip Standard U-Cup Straight Lip  Standard U-Cup
Angled Lip Standard U-Cup
(Parker U-Cup 8400 Style)
Straight Lip Standard U-Cup
(AN6226 Style U-Cup)

COMMON CUSTOM RUBBER U-CUP CONFIGURATIONS

Our expert engineers can assist with designs to maximize performance often with costs only slightly more than similar commodities.
Let us help you differentiate yourself from the competition
 
U-Cup Thin  Lip U-Cup Thick Lip U-Cup non Symetrical
Thin-lip custom U-Cup
designed for lower friction and quicker reaction to pressure. 
Suitable for reciprocating and medium speed reciprocating.
Heavy-lip custom U-cup
designed for heavier loading and more positive sealing capabilities. 
Suitable for reciprocating and low rotary applications.
Non-symmetric custom U-Cup
designed for fast reciprocating and/or fast rotary applications

For higher performance application with extreme temperature, pressure or chemicals consider Metallic Spring Energized PTFE Seals.
 

Need a custom product design or custom material formulation to improve performance in a specific application to separate yourself from the competition? 
Let us prove how responsive our product and application engineers are and that our custom products and custom materials often cost less than our competitiors standards.