Piston Seals

This style of seal provides effective static and dynamic sealing while the groove on the sealing surface acts as a lubrication reservoir to reduce friction. Grooves on both sides prevent blow by during sudden pressure changes and a premium NBR square energizer prevents twisting. This product is molded from premium urethane which provides excellent extrusion and wear resistance.

98A Durometer | Urethane Material | 4 3/4 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

This style of seal provides effective static and dynamic sealing while the groove on the sealing surface acts as a lubrication reservoir to reduce friction. Grooves on both sides prevent blow by during sudden pressure changes and a premium NBR square energizer prevents twisting. This product is molded from premium urethane which provides excellent extrusion and wear resistance.

98A Durometer | Urethane Material | 5 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

Molded from 93 Shore A polyurethane with a 70 Shore A energizer, this seal utilizes the same groove dimensions as a standard o-ring or T-seal. One or two Style 575 back-up rings may be used for wider grooves. Extrusion resistant by design, this seal is also resistant to rolling and twisting. Installation is an easy two step snap-in procedure with no need to re-size before insertion into the bore. Piston diameter “I” dimensions are given for pistons without wear rings.

93A; 70A Durometer | Urethane Material | 7 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

PS-GD1000K consists of PTFE-bronze cap energized by a nitrile expander, supported by plastic back-up rings and guided with PTFE/bronze reinforced POM bearing rings. The standard piston construction permits use to 5200 psi pressure and the reinforced piston construction up to 9000 psi. These are genuine Hunger® parts.

Urethane Filled POM Material | 82 MM Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

PS-GD1000K consists of PTFE-bronze cap energized by a nitrile expander, supported by plastic back-up rings and guided with PTFE/bronze reinforced POM bearing rings. The standard piston construction permits use to 5200 psi pressure and the reinforced piston construction up to 9000 psi. These are genuine Hunger® parts.

Urethane Filled POM Material | 92 MM Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

PS-GD1000K consists of PTFE-bronze cap energized by a nitrile expander, supported by plastic back-up rings and guided with PTFE/bronze reinforced POM bearing rings. The standard piston construction permits use to 5200 psi pressure and the reinforced piston construction up to 9000 psi. These are genuine Hunger® parts.

Urethane Filled POM Material | 103 MM Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

PS-GD1000K 140X118X43

PS-GD1000K 160X138X53

These piston seals provide bi-directional, low friction sealing with increased stability and superior leakage control. The square cut energizer provides low pressure sealing and eliminates backside leakage. This seal also effectively seals between different fluids on each side of the piston seal, making gas/liquid sealing combinations possible. Piston diameter “I” dimensions are given for pistons without wear rings.

40% Bronze Filled PTFE Material | 2.134 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

Our Style PSU piston seal, or uniring, is a laminated one piece double acting seal made of cast polyurethane. The tough outer layer is highly resistant to abrasion and is impregnated with molybdenum disulfide to reduce friction. The softer inner layer acts as a static seal and also energizes the OD to make full contact with the bore. This seal may be used to replace an existing Uniring or other seals of the same dimensions – O-rings, O-rings with back-ups, T-seals, U-seals, etc. Piston diameter “I” dimensions are given for pistons without wear rings.

60D & 57A Durometer | Urethane Composite Material | 1 1/8 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities