Hudraulic & Fluid Seals

Buffer Seals

For linear and reciprocating dynamic sealing applications

High Pressure - Ultra High Pressure Buffer Seals

Installed buffer seal example	Buffer seal example

Buffer seals are typically unidirectional rod seals that work in conjunction with the primary rod seal to absorb pressure spikes
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Our Buffer Seals are classified as follows:

• High Pressure Buffer Seals
  (3,000psi – 5,000psi*)
• Ultra High Pressure Buffer Seals
  (4,000 – 28,500psi*)

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High-Pressure Buffer Seals (3,000psi – 5,000psi*)

S92	S9	F2B

Ultra-High-Pressure Buffer Seals (4,000psi – 28,500psi*)

Single-acting/unidirectional (capable of sealing pressure from one side)

Sealing ultra-high pressures can be achieved by replacing the low friction PTFE/Teflon® sealing element with high strength polymer materials.

S92	S9

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Contact us, request more information or call 1-800-283-7140 for immediate answers to your questions.

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Why American High Performance Seals?
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Availability:  Most standard or non-standard and application-specific designed buffer seals, in inch or metric sizes, are available with a 1-4 day turnaround.

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Seal Materials: The selection of the best material has a critical impact on achieving the best sealing performance. Our comprehensive range of leading edge standard-, high- and low-temperature materials include: High-performance Polyurethane (P101), Nitrile, Viton®, H-Nbr, PTFE (Teflon®), filled PTFE, Aflas®, Hytrel®, Kalrez®, EPDM, Silicone, FDA compliant materials, Nylon, Nylatron®, POM, UHMWPE, Tefzel®, and Peek, along with our proprietary specialized materials. More Info on Materials

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For your unique or special buffer seal application, please contact our engineers to help you in specifying a seal that’s best for your situation.

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*Pressure values are guidelines that depend on seal material, seal configuration, seal housing design, fluid or medium, operating temperatures, pressures, surface speed, and working environment. For maximum seal life expectancy, do not operate your seal beyond 75% of its operating limits.
For pressures exceeding 8000psi, please consult our engineers at engineering@ahpseals.com or call 1-800-283-7140 for advice.

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AHPSeal's Buffer Seals are currently in successful service in the following industries:

Steel Works Government, Military and Defense Abrasive Substance Pumps and Valves Pharmaceuticals Can and Package Filling Machines Oil-Field Exploration and Production Paint and Solvent Manufacture and Application Adhesives Dispensing Valves and Cylinders Chemical Pumps Cryogenic Liquid Control Components Liquid Handling Swivel Joints Hydraulics Construction Equipment Drilling Equipment

Chemical Pumps and Valves Heavy Mobile Equipment Mining Rubber and Plastics Presses Food Processing Space Exploration Marine Tire Production Low Friction Vacuum Service Automotive Plants Pharmaceutical Production Domestic Goods Production Many other applications

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American High Performance Seals assumes no obligation or liability for any advice furnished, or results obtained with respect to these products. All such advice is given and accepted at the buyer’s risk. This information, based on our experience, is offered as part of our service to customers. It is intended for use by persons having technical skill, at their own discretion and risk. We do not guarantee favorable results, and we assume no liability in connection with its use.