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Molded in PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes to protect the rod seal. Bronze-filled Teflon rod buffer seal with a rubber energizer.

Bronze Filled PTFE Material | 2 in Nominal Inner Diameter | Buffer Seal

Rubber Material | 1 3/4 in Nominal Inner Diameter | Wiper

Rubber Material | 1 3/4 in Nominal Inner Diameter | Wiper

Rubber Material | 3 1/2 in Nominal Inner Diameter | Wiper

Rubber Material | 3 1/2 in Nominal Inner Diameter | Wiper

Utilizing a sturdy metal case, these wipers are molded from the same high performance urethane used in our Heavy Duty U-seals. Built for severe service, these wipers are capable of surviving hostile environments.

92A Durometer | Urethane Material | 1 3/4 in Nominal Inner Diameter

Features

• Used in Heavy Duty U-seals
• Capable of surviving hostile environments
• Molded from the high performance urethane

Utilizing a sturdy metal case, these wipers are molded from the same high performance urethane used in our Heavy Duty U-seals. Built for severe service, these wipers are capable of surviving hostile environments.

92A Durometer | Urethane Material | 2 1/4 in Nominal Inner Diameter

Features

• Used in Heavy Duty U-seals
• Capable of surviving hostile environments
• Molded from the high performance urethane

Utilizing a sturdy metal case, these wipers are molded from the same high performance urethane used in our Heavy Duty U-seals. Built for severe service, these wipers are capable of surviving hostile environments.

92A Durometer | Urethane Material | 2 1/2 in Nominal Inner Diameter

Features

• Used in Heavy Duty U-seals
• Capable of surviving hostile environments
• Molded from the high performance urethane

Style 850 u-seals offer excellent resistance to extrusion and abrasion. The round cross-section expander offers energized sealing from zero to 5,000 psi.

95A Durometer | Urethane Material | 3 1/2 in Nominal Inner Diameter | 7/32 in Cross Section | U-Seal

Hercules® Sealing Products is pleased to introduce our new line of PowerbandTM tight tolerance premium wearrings. Manufactured from a highly engineered blend of premium nylon, glass fiber, and PTFE, PowerbandsTM offer a high strength wear-ring for all cylinder applications, including those with minimal lubrication. And, with a Coefficient of Friction nearly 50% lower than our standard product, your cylinders will run smoother and more efficiently than ever. All PowerbandsTM are fully machined with cross-section tolerances of only ±0.001”, chamfered corners, and scarf or angle-cut end gaps. Compared to standard tolerances of ±0.0025”, this tightened tolerance improves the alignment and concentric operation of cylinder rods and pistons. The fully machined chamfered corners will better accommodate cylinder housing grooves, further improving piston and rod alignment. Lastly, the scarf-cut end gap reduces the loss of bearing support that may occur during cylinder side-loading. When combined, these features reduce the tolerance stack-up within the components of the cylinder. As a result, your cylinders will operate more consistently and be capable of operating at higher pressures and higher side loads than with standard wear-ring products. Furthermore, with this improved cylinder operation, your seals will last longer and the life of your cylinder will be extended. PowerbandsTM are currently available in our most popular wear-ring dimensions.

6 3/4 in Nominal Inner Diameter | Powerband

Features

• PowerbandsTM offer a high strength wear-ring for all cylinder applications
• Fully machined with cross-section tolerances of only ±0.001
• Chamfered corners
• Scarf or angle-cut end gaps

This seal, molded from high grade 55D polyurethane, may retrofit the PS1800 seals, considering all dimensions are comparable. This seal material, with a high degree of memory, stretches over the piston and snaps in the groove for immediate assembly. These seals also feature low friction and high abrasion and extrusion resistance which helps to eliminate assembly damage. Piston diameter “I” dimensions are given for pistons without wear rings.

55D Durometer | Glass/PTFE Filled Polyurethane Material | 3.462 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

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 | 3.884 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities