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Piston Buffer Cap Seal

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The GFS Piston Buffer Cap Seal is a single-acting O-Ring energized PTFE piston seal used in dynamic sealing applications. The seal is installed in closed grooves, including grooves to ISO 7425. The seal assembly offers low friction and eliminates the potential for stick-slip, which makes it well suited for high speed applications. Additionally, the Buffer Cap Seal has high wear resistance, low break out force, and extrusion resistance.  Originally developed as a rod seal, this sealing profile has performed very well as a single acting piston seal in demanding applications, or can be paired with additional piston seals. This sealing assembly is supplied standard with an energizing FKM O-ring, other elastomers can be supplied upon request.

PERFORMANCE & SPECIFICATIONS

The GFS Piston Buffer Cap Seal is a single-acting O-Ring energized PTFE piston seal used in dynamic sealing applications. The seal is installed in closed grooves, including grooves to ISO 7425. The seal assembly offers low friction and eliminates the potential for stick-slip, which makes it well suited for high speed applications. Additionally, the Buffer Cap Seal has high wear resistance, low break out force, and extrusion resistance.  Originally developed as a rod seal, this sealing profile has performed very well as a single acting piston seal in demanding applications, or can be paired with additional piston seals. This sealing assembly is supplied standard with an energizing FKM O-ring, other elastomers can be supplied upon request.

  •  Performance
    • Pressure (Max) 5500 psi
    • Speed (ft/s) 16.0
    • Temperature Range (F) 0 to 400
  • Recommended Applications
    • Machine Tools
    • Injection Molding Machines
    • Presses
  • Equivalent Profiles
    • Trelleborg TurconĀ® StepsealĀ®
    • Hallite P16
Bore (In.)
Bore
APPLY
Material
Material
APPLY
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Cross Section (In.)
Cross Section
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x clear all
Groove Width (In.)
Groove Width
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Grouped product items
PART NUMBER Cross Section (In.) Bore (In.) Groove ID (In.) Groove Width (In.) Material Ships Within
PRICE
ADD TO CART
Piston Buffer Cap Seal 0.500" Bore x 0.310" Groove ID x 0.087" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.500

Groove ID (In.) 0.310

Groove Width (In.) 0.087

Material Bronze Filled

Ships Within 4-6 Weeks

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Starting at: $19.32
PRICE QTY
$24.15
Piston Buffer Cap Seal 0.500" Bore x 0.310" Groove ID x 0.087" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.500

Groove ID (In.) 0.310

Groove Width (In.) 0.087

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $23.48
PRICE QTY
$29.36
Piston Buffer Cap Seal 0.563" Bore x 0.370" Groove ID x 0.087" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.563

Groove ID (In.) 0.370

Groove Width (In.) 0.087

Material Bronze Filled

Ships Within 5 Days

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Starting at: $20.21
PRICE QTY
$25.27
Piston Buffer Cap Seal 0.563" Bore x 0.370" Groove ID x 0.087" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.563

Groove ID (In.) 0.370

Groove Width (In.) 0.087

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $22.23
PRICE QTY
$27.78
Piston Buffer Cap Seal 0.625" Bore x 0.432" Groove ID x 0.087" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.625

Groove ID (In.) 0.432

Groove Width (In.) 0.087

Material Bronze Filled

Ships Within 5 Days

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Starting at: $20.08
PRICE QTY
$25.09
Piston Buffer Cap Seal 0.625" Bore x 0.432" Groove ID x 0.087" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.625

Groove ID (In.) 0.432

Groove Width (In.) 0.087

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $21.08
PRICE QTY
$26.36
Piston Buffer Cap Seal 0.688" Bore x 0.495" Groove ID x 0.087" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.688

Groove ID (In.) 0.495

Groove Width (In.) 0.087

Material Bronze Filled

Ships Within 5 Days

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Starting at: $20.34
PRICE QTY
$25.43
Piston Buffer Cap Seal 0.688" Bore x 0.495" Groove ID x 0.087" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.688

Groove ID (In.) 0.495

Groove Width (In.) 0.087

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $20.00
PRICE QTY
$25.00
Piston Buffer Cap Seal 0.750" Bore x 0.557" Groove ID x 0.087" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.750

Groove ID (In.) 0.557

Groove Width (In.) 0.087

Material Bronze Filled

Ships Within 5 Days

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Starting at: $19.72
PRICE QTY
$24.64
Piston Buffer Cap Seal 0.750" Bore x 0.557" Groove ID x 0.087" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.097

Bore (In.) 0.750

Groove ID (In.) 0.557

Groove Width (In.) 0.087

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $18.98
PRICE QTY
$23.72
Piston Buffer Cap Seal 0.813" Bore x 0.526" Groove ID x 0.126" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 0.813

Groove ID (In.) 0.526

Groove Width (In.) 0.126

Material Bronze Filled

Ships Within 5 Days

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Starting at: $17.22
PRICE QTY
$21.52
Piston Buffer Cap Seal 0.813" Bore x 0.526" Groove ID x 0.126" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 0.813

Groove ID (In.) 0.526

Groove Width (In.) 0.126

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $18.94
PRICE QTY
$23.67
Piston Buffer Cap Seal 0.875" Bore x 0.588" Groove ID x 0.126" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 0.875

Groove ID (In.) 0.588

Groove Width (In.) 0.126

Material Bronze Filled

Ships Within 5 Days

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Starting at: $17.16
PRICE QTY
$21.46
Piston Buffer Cap Seal 0.875" Bore x 0.588" Groove ID x 0.126" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 0.875

Groove ID (In.) 0.588

Groove Width (In.) 0.126

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $18.02
PRICE QTY
$22.53
Piston Buffer Cap Seal 0.938" Bore x 0.651" Groove ID x 0.126" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 0.938

Groove ID (In.) 0.651

Groove Width (In.) 0.126

Material Bronze Filled

Ships Within 5 Days

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Starting at: $16.62
PRICE QTY
$20.77
Piston Buffer Cap Seal 0.938" Bore x 0.651" Groove ID x 0.126" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 0.938

Groove ID (In.) 0.651

Groove Width (In.) 0.126

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $17.45
PRICE QTY
$21.82
Piston Buffer Cap Seal 1.000" Bore x 0.713" Groove ID x 0.126" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 1.000

Groove ID (In.) 0.713

Groove Width (In.) 0.126

Material Bronze Filled

Ships Within 5 Days

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Starting at: $15.64
PRICE QTY
$19.56
Piston Buffer Cap Seal 1.000" Bore x 0.713" Groove ID x 0.126" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 1.000

Groove ID (In.) 0.713

Groove Width (In.) 0.126

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $16.43
PRICE QTY
$20.54
Piston Buffer Cap Seal 1.063" Bore x 0.776" Groove ID x 0.126" Groove Width, Bronze Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 1.063

Groove ID (In.) 0.776

Groove Width (In.) 0.126

Material Bronze Filled

Ships Within 5 Days

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Starting at: $15.64
PRICE QTY
$19.55
Piston Buffer Cap Seal 1.063" Bore x 0.776" Groove ID x 0.126" Groove Width, Carbon Graphite Filled PTFE

Cross Section (In.) 0.144

Bore (In.) 1.063

Groove ID (In.) 0.776

Groove Width (In.) 0.126

Material Carbon Graphite Filled

Ships Within 5 Days

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Starting at: $15.71
PRICE QTY
$19.63