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Product Performance. Affordability. Availability.

P I S T O N S E A L

PG

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P I S T O N S E A L

PG

P I S T O N S E A L

PG The PG Piston Seal is a compact, bi-directional seal designed for medium to heavy duty hydraulic cylinders. It is a two component design consisting of a Hytrel® HY55 seal ring and 70 Shore A NBR Square energizer. The PG Piston Seal is simple to install resisting rolling and twisting in long stroke cylinder applications.

The high strength of the Hytrel HY55 material prevents seal extrusion allowing for elevated operating pressure. It offers excellent wear resistance and a wide operating temperature range. The seal ring is designed with a built-in fluid reservoir between the sealing lips, to retain lubrication, which lowers the breakout and running friction ensuring extended seal life. Additionally, the seal ring has molded in axial pads providing proper pressurization to prevent “blow by” during rapid pressure reversals. The 70 Shore A NBR Square energizer provides stability and the initial pre-load for proper sealing.

The PG3 Series Piston Seal is designed to retrofit standard North American housing standard (NPFA T3.19.18), which is commonly referenced as a rectangular piston seal.

The PG5 Series Piston Seal is designed to retrofit the common Industrial O-Ring housing standard.

Standard Materials • HY55 55 Shore D Hytrel® Thermoplastic Elastomer (Orange)• NBR 70 Shore A Nitrile Rubber (NBR)

Technical Specifications Operating Condition

Features • Bi-Directional Piston Seal• High Pressure Capability• High Extrusion Resistance• Easy Installation• Zero Drift Piston Seal• Compact Piston Seal Design• Hydrolysis Resistant• Oil Resistant• Fits Industry Standard Housings• Cost Effective• Wide Operating Temperature Range• High Reliability• Reduced Warranty Cost

Parameter Unit Low Extreme Normal Operation High Extreme

Pressure psi   0 — 5,000 7,500

Temperature °F –65 –40 — 250 275

Speed fps   0 — 2 3

Note Continuous operation at any one of the extreme conditions may result in substantially reduced seal life.

Bore Dia.

Groove Width

L1

ØD1

Groove Dia.Ød1

PISTON SEALS

Series 3,000 psi 5,000 psi 7,500 psi

PG 0.034” 0.030” 0.024”

Extrusion Gaps

Maximum recommended diametrical extrusion gap @ 180°F when taking into consideration the maximum eccentricity of the piston and utilizing precision tolerance wear rings.

P I S T O N S E A L

PG

For surface finish recommendations visit BlackHawkSeals.com/Engineering

Part Number Bore Dia. “D1” Groove Dia. “d1” Groove Width “L1”PG3-01000-129-NHY55 1.000 0.691 0.129PG3-01250-129-NHY55 1.250 0.941 0.129PG3-01500-129-NHY55 1.500 1.191 0.129PG3-01750-129-NHY55 1.750 1.441 0.129PG3-02000-129-NHY55 2.000 1.691 0.129PG3-02000-283-NHY55 2.000 1.462 0.283PG3-02250-129-NHY55 2.250 1.941 0.129PG3-02500-129-NHY55 2.500 2.191 0.129PG3-02500-283-NHY55 2.500 1.962 0.283PG3-02750-129-NHY55 2.750 2.441 0.129PG3-03000-283-NHY55 3.000 2.462 0.283PG3-03250-283-NHY55 3.250 2.712 0.283PG3-03500-283-NHY55 3.500 2.962 0.283PG3-03750-283-NHY55 3.750 3.212 0.283PG3-04000-283-NYH55 4.000 3.462 0.283PG3-04250-283-NHY55 4.250 3.712 0.283PG3-04500-283-NHY55 4.500 3.962 0.283PG3-04750-283-NHY55 4.750 4.212 0.283PG3-05000-283-NHY55 5.000 4.462 0.283PG3-05250-378-NHY55 5.250 4.504 0.378PG3-05500-378-NHY55 5.500 4.754 0.378PG3-05750-378-NHY55 5.750 5.004 0.378PG3-06000-378-NHY55 6.000 5.254 0.378PG3-06250-378-NHY55 6.250 5.504 0.378PG3-06500-378-NHY55 6.500 5.754 0.378PG3-07000-378-NHY55 7.000 6.254 0.378PG3-07250-378-NHY55 7.250 6.504 0.378PG3-07500-378-NHY55 7.500 6.754 0.378PG3-08000-378-NHY55 8.000 7.254 0.378

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PISTON SEALS

P I S T O N S E A L

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H9 and h9 tolerance per ISO 286. Additional sizes may be available.

Part Number Bore Dia. “D1” Groove Dia. “d1” Groove Width “L1”PG3-08500-378-NHY55 8.500 7.754 0.378PG3-09000-378-NHY55 9.000 8.137 0.378PG3-09500-378-NHY55 9.500 8.637 0.378PG3-10000-378-NHY55 10.000 9.137 0.378PG5-01000-187-NHY55 1.000 0.758 0.187PG5-01125-187-NHY55 1.125 0.883 0.187PG5-01250-187-NHY55 1.250 1.008 0.187PG5-01312-187-NHY55 1.312 1.070 0.187PG5-01375-187-NHY55 1.375 1.133 0.187PG5-01500-130-NHY55 1.500 1.258 0.130PG5-01500-187-NHY55 1.500 1.258 0.187PG5-01562-187-NHY55 1.562 1.320 0.187PG5-01625-187-NHY55 1.625 1.383 0.187PG5-01750-130-NHY55 1.750 1.508 0.130PG5-01750-187-NHY55 1.750 1.508 0.187PG5-01875-281-NHY55 1.875 1.505 0.281PG5-02000-175-NHY55 2.000 1.582 0.175PG5-02000-281-NHY55 2.000 1.625 0.281PG5-02125-281-NHY55 2.125 1.755 0.281PG5-02250-130-NHY55 2.250 1.832 0.130PG5-02250-281-NHY55 2.250 1.880 0.281PG5-02375-281-NHY55 2.375 2.005 0.281PG5-02500-130-NHY55 2.500 2.223 0.130PG5-02500-175-NHY55 2.500 2.082 0.175PG5-02500-281-NHY55 2.500 2.130 0.281PG5-02625-281-NHY55 2.625 2.255 0.281PG5-02750-160-NHY55 2.750 2.384 0.160PG5-02750-281-NHY55 2.750 2.380 0.281PG5-02875-281-NHY55 2.875 2.505 0.281PG5-03000-160-NHY55 3.000 2.598 0.160PG5-03000-281-NHY55 3.000 2.630 0.281PG5-03125-281-NHY55 3.125 2.755 0.281PG5-03250-160-NHY55 3.250 2.848 0.160PG5-03250-281-NHY55 3.250 2.880 0.281PG5-03375-281-NHY55 3.375 3.005 0.281PG5-03500-160-NHY55 3.500 3.098 0.160PG5-03500-281-NHY55 3.500 3.130 0.281PG5-03625-281-NHY55 3.625 3.255 0.281PG5-03750-160-NHY55 3.750 3.348 0.160PG5-03750-281-NHY55 3.750 3.380 0.281PG5-03875-281-NHY55 3.875 3.505 0.281PG5-04000-160-NHY55 4.000 3.598 0.160PG5-04000-281-NHY55 4.000 3.630 0.281PG5-04125-281-NHY55 4.125 3.755 0.281PG5-04250-160-NHY55 4.250 3.848 0.160PG5-04250-281-NHY55 4.250 3.880 0.281PG5-04375-281-NHY55 4.375 4.005 0.281PG5-04500-160-NHY55 4.500 4.098 0.160PG5-04500-281-NHY55 4.500 4.130 0.281PG5-04625-281-NHY55 4.625 4.255 0.281PG5-04750-281-NHY55 4.750 4.380 0.281PG5-04875-281-NHY55 4.875 4.505 0.281PG5-05000-160-NHY55 5.000 4.598 0.160PG5-05000-281-NHY55 5.000 4.630 0.281PG5-05125-375-NHY55 5.125 4.655 0.375PG5-05250-375-NHY55 5.250 4.780 0.375PG5-05375-375-NHY55 5.375 4.905 0.375PG5-05500-375-NHY55 5.500 5.030 0.375PG5-05750-375-NHY55 5.750 5.280 0.375PG5-06000-375-NHY55 6.000 5.528 0.375PG5-06500-375-NHY55 6.500 6.030 0.375PG5-07000-375-NHY55 7.000 6.528 0.375PG5-07250-375-NHY55 7.250 6.780 0.375PG5-07500-375-NHY55 7.500 7.030 0.375PG5-08000-375-NHY55 8.000 7.528 0.375

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10515 Majic Port Lane | Fort Wayne, IN 46819 | USA260-615-3951 | info@BlackHawkSeals.com

BlackHawkSeals.com