Performance Seals Index

Our performance seals cover a range of applications across industries, operating under different temperatures, pressure thresholds, and chemical compatibility. Learn more about each type of performance seal and its characteristics and ideal applications below.

Spring Energized PTFE Seals

Rotary, reciprocating and oscillatory motions can typically be sealed with Spring Energized Seals depending on design.
Great performance in compressed gas waterless fracking seals, LPG and Liquid Nitrogen seals,
Outstanding chemical compatibility and extreme low temperature seal, cryogenic seal applications.
Low friction and long service life in demanding application.
Spring Energized Seals can operate < 3,000 psi custom < 60,000 psi.
SES can operate -280o to 500o F custom -400o to 600o F.
Wide range of spring energizing configurations based on application.
Seals are available in Rod and Piston Inside and Outside Pressure and unidirectional sealing configurations.
MSE® Seals, Bal Seals, Variseal®, FlexiSeal®.

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

Custom PTFE Seal and High Performance Plastics

Custom machined PTFE and High performance Plastics like UHMW PE, PEEK, Polyimide...
PTFE O-Rings, PTFE Seals, PTFE Gaskets, PTFE Lip Seals, PTFE Guides, PTFE Bushings, PTFE Spacers...
View our high performance plastic selection reference guide.

O-ring Glide Ring Cap Seal Cross Section

PTFE Glide Rings and Cap Seals

Designed to extend O-Ring sealing life in dynamic reciprocating applications
Typically suitable for slow and fast reciprocating speeds running dry or lubricated
Pressure up tp 3000 PSI in most applications
Compatible with all O-Ring materials
Cannot be stretched more than 5% during installation.
Not recomended in Rotary or Oscillating Applications

O-ring Contour Backup Ring Cross Section

Back-up Rings for High Pressure

Back-Up Rings used with O-Rings at pressures > 1500 psi or big extrusion gaps
Back-Up Rings are designed to limit O-Ring clearnace gap extrusion.
Available in elastomeric compounds and PTFE Back-Up Rings.
PTFE Back-up rings can be solid, split, spiral, or custom for ease of install.
PTFE Back-up Ring size standards AN6244, AN6246, MS27595, MS28774, MS28782 and MS28783.
Elastomer Back-up Rings are typically contoured to conform with an O-Ring.
Elastomer Back-up Rings fit standard USA and custom O-Ring sizes.
Back-up Rings require wider glands to accommodate.

ISO and KF Centering Rings

Centering rings are used to mostly in vacuum fitings to improve seal performance

Oil Seals - Radial Shaft Seals

Consists of a rubber sealing lip, tensioning spring and metal casing
Keeps oil and grease in and contaminants out
Have a high chemical / thermal resistance
Can improve pump rates

Ready to Seal Your Success with Marco Rubber & Plastics?

Marco Rubber & Plastics has the capacity to create seals in the custom shapes, materials, and sizes your application needs to the highest quality standards. Connect with one of our experts and discuss your needs today.