The PS1850 piston seal can be used interchangeably with the PS1800 style piston seal. This seal provides improved heat resistance for demanding applications. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | BRONZE FILLED PTFE SEAL RUBBER ENERGIZER |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 12 FT/SEC |
| PART NUMBER | (Piston Seal)(Type of Seal) - (Size) |
The PS1800 provides low friction, high strength piston sealing. The PS1800 also provides double-acting piston sealing in a compact design that meets the requirements of ANSI/B93-32-1973. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | 15% GLASS FILLED PTFE SEAL RUBBER ENERGIZER |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 12 FT/SEC |
| PART NUMBER | (Piston Seal)(Type of Seal) - (Size) |
NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | 15% GLASS FILLED PTFE SEAL RUBBER ENERGIZER |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 12 FT/SEC |
| PART NUMBER | (Piston Seal)(Type of Seal) - (Size) |
Totally interchangeable with Style PS1400 PTFE piston seals, Style PS1500 piston seals are molded from tough 60 shore D durometer polyurethane. During the molding process, a .002 in. thick band of molybdenum is molded into the outside diameter of the seal ring for reduced friction. PS1500 piston seals are easily stretched over the piston and recover rapidly with the elimination of the 'cold flow' characteristics found in PTFE seals. Piston diameter 'F' dimensions are given for pistons without wear rings.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | POLYURETHANE SEAL RUBBER ENERGIZER |
| TEMPERATURE RANGE | -40° to +200° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Piston Seal)(Type of Seal) - (Size) |
INSTALLATION OF PTFE PISTON SEALS
Installing PTFE piston seals is not always an easy task. The use of installation tools is recommended but often not convenient when working with a wide variety of sizes and applications. Finger installations are practical with rings of smaller cross-sections. Using fingers or a rounded plastic stick, knead the ring over the piston into the groove. With rings of larger cross-sections it may be necessary to heat the ring. Warming the ring in water or oil at 130° F or 140° F for about 5 minutes will soften the material for easier installation. Always avoid inconsistent stretching or overstretching of the PTFE seal.
To prevent the PTFE ring from snapping into the wrong groove, cover wear ring grooves with plastic tape.
After seal installation, assembly of the cylinder may be difficult if the piston seal is loose on the piston or the cylinder has an inadequate leading edge chamfer. In such cases, compress the piston seal with belting or a suitable hose clamp. If the piston seal must pass threads or any other sharp edges during the cylinder assembly, cover the edges with plastic tape or wrap.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | 15% GLASS FILLED PTFE SEAL RUBBER ENERGIZER |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 12 FT/SEC |
| PART NUMBER | (Piston Seal)(Type of Seal) - (Size) |
The PA Unitized Pistons are designed to handle a broad range of application parameters. The piston body is machined to exact dimensions and is constructed using four components: A high strength steel body, a non-metallic bearing, a rubber loading ring and a filled PTFE seal ring. The non-metallic bearing is molded to the piston using a special proprietary process.
| SEAL INFORMATION | |
|---|---|
| TEMPERATURE RANGE | -40° to +275° F |
| MAX PRESSURE | 5,000 PSI |
| MAX VELOCITY | 3 ft / second |
| MATERIAL | STEEL, NYLON, NBR, PTFE |
| PART NUMBER | (PREFIX) - (OD) X (ID) X (HT) |
Intermediate and Wide Base T-Seals are designed to fit MIL-5514F o-ring glands only and interchange with 1 o-ring / 1 back-up ring and 1 o-ring / 2 back-up ring grooves, respectively.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS |
| TEMPERATURE RANGE | -35° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Prefix) - (Size) |
The Style TP-L seal is a zero drift piston seal for bi-directional pressure applications. The locking anti-extrusion rings provide for an easier installation. It is designed to retrofit O-Ring and standard T-seal grooves. The 70 shore A NBR is designed specifically for performance in compression type dynamic seals. Other features include a net molded dynamic sealing surface and backup chamfers.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS |
| TEMPERATURE RANGE | -35° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Prefix) - (Size) |
T-Seals are non-spiraling and extrusion resistant to 5,000 psi with improved tolerances.
IB = Intermediate Base, WB = Wide Base
Intermediate and Wide Base T-Seals are designed to fit MIL-5514F o-ring glands only and interchange with 1 o-ring / 1 back-up ring and 1 o-ring / 2 back-up ring grooves, respectively.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS |
| TEMPERATURE RANGE | -35° to +220° F |
| PRESSURE RANGE | 0 to 5,000 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Prefix) - (Size) |
A heavy duty double-acting assembly, the capped piston T-seal exhibits excellent sealability, extrusion resistance and wearability. T-seals with 'BR' suffix utilize a Bronze Filled PTFE cap instead of the standard Glass Filled PTFE cap.
INSTALLATION OF PTFE PISTON SEALS
Installing PTFE piston seals is not always an easy task. The use of installation tools (Designated by a 'CTC-' product code prefix) is recommended but often not convenient when working with a wide variety of sizes and applications. Finger installations are practical with rings of smaller cross-sections. Using fingers or a rounded plastic stick, knead the ring over the piston into the groove. With rings of larger cross-sections it may be necessary to heat the ring. Warming the ring in water or oil at 130° F or 140° F for about 5 minutes will soften the material for easier installation. Always avoid inconsistent stretching or overstretching of the PTFE seal.
To prevent the PTFE ring from snapping into the wrong groove, cover wear ring grooves with plastic tape.
After seal installation, assembly of the cylinder may be difficult if the piston seal is loose on the piston or the cylinder has an inadequate leading edge chamfer. In such cases, compress the piston seal with belting or a suitable hose clamp. If the piston seal must pass threads or any other sharp edges during the cylinder assembly, cover the edges with plastic tape or wrap.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | PTFE CAP NYLON BACK-UP RUBBER ENERGIZER |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 6,000 PSI |
| SPEED | 4.5 FT/SPEED> |
| PART NUMBER | (Prefix) - (Bore Size) |
INSTALLATION OF PTFE PISTON SEALS
Installing PTFE piston seals is not always an easy task. The use of installation tools (Designated by a 'CTC-' product code prefix) is recommended but often not convenient when working with a wide variety of sizes and applications. Finger installations are practical with rings of smaller cross-sections. Using fingers or a rounded plastic stick, knead the ring over the piston into the groove. With rings of larger cross-sections it may be necessary to heat the ring. Warming the ring in water or oil at 130° F or 140° F for about 5 minutes will soften the material for easier installation. Always avoid inconsistent stretching or overstretching of the PTFE seal.
To prevent the PTFE ring from snapping into the wrong groove, cover wear ring grooves with plastic tape.
After seal installation, assembly of the cylinder may be difficult if the piston seal is loose on the piston or the cylinder has an inadequate leading edge chamfer. In such cases, compress the piston seal with belting or a suitable hose clamp. If the piston seal must pass threads or any other sharp edges during the cylinder assembly, cover the edges with plastic tape or wrap. Note: Caterpillar part number are used as a refernce only. We do not imply that these part are original equipment parts.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 6,000 PSI |
One Piece Double Acting Piston Cups
This complete piston cup with a simple, one-piece construction serves the same purpose as a multi-assembly unit and is more economical with easy maintenance, dependability and long life. The unique piston cup consists of homogeneous rubber bonded to a zinc coated steel plate. The center hole may be enlarged to accommodate larger piston rods. Recommended for pneumatic and low-pressure hydraulic applications.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | RUBBER LIP, ZINC COATED STEEL PLATE |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 800 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Prefix) - (Bore Size) |
Piston cups are constructed of rubberized fabric. Cups with no hole are center punched.
NOTE: If Product number ends in 'ED' the piston cups are specially sized for use in EDBRO Cylinders.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | COTTON FABRIC & RUBBER |
| TEMPERATURE RANGE | -35° to +220° F |
| PRESSURE RANGE | 0 to 2,500 PSI |
| SPEED | 1.5 FT/SEC |
| PART NUMBER | (Piston Cup Type)(Bore) - (Hole Size) |
To obtain best results from any style of piston cup, it is recommended that the piston properly support the heel of the cup. Recommended diametral clearance between the piston and cylinder wall are as follows:
1" to 2-1/4" .005"
2-1/2" to 4-3/4" .008"
5" to 10" .010"
The height of the machined shoulder most frequently used to control squeeze on the heel of the cup is as follows:
Cups 1/8" thick .116/.119"
Cups 5/32" thick .146/.149"
Cups 3/16" thick .178/.181"
The follower plate should be approximately .110" smaller than the ID of the cup. To reduce any tendency of the cup to extrude under pressure a phonograph finish may be machined on the surface of the follower plate.
NOTE: The 8000 piston cups are center punched.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | 90A URETHANE |
| TEMPERATURE RANGE | -65° to +220° F |
| PRESSURE RANGE | 0 to 1,200 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Piston Cup Type)(Bore) - (Hole Size) |
NOTE: The 6000 piston cups are center punched if there is no hole size indicated.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | BUNA-N RUBBER |
| TEMPERATURE RANGE | -40° to +220° F |
| PRESSURE RANGE | 0 to 150 PSI |
| SPEED | 3 FT/SEC |
| PART NUMBER | (Piston Cup Type)(Bore) - (Hole Size) |
| SEAL INFORMATION | |
|---|---|
| MATERIAL | FABRIC REINFORCED RUBBER AND BUNA-N |
| TEMPERATURE RANGE | -40° TO +250° F |
| PRESSURE RANGE | SEE CHART BELOW |
| SPEED | 1.5 FT/SEC |
| PART NUMBER | (Prefix) - (ID) - (OD) |
If your design is of medium to high pressure it is recommended that you utilize fabric reinforced rings. The following is a guide to pressure rating of multiple rings, including flat bottom rings.
| PRESSURE RATING OF MULTIPLE RINGS | |
|---|---|
| PRESSURE P.S.I. | NUMBER OF RINGS |
| 250 - 500 | 3 |
| 500 - 2,000 | 4 |
| 2,000 - 5,000 | 5 |
| 5,000 - 8,000 | 6 |
A homogeneous ring may be also used for sealing at low pressure. Do not include the homogeneous ring in calculating pressure rating. Due to the different material, it is difficult to rate this type of ring. If you wish to use all homogeneous rings, tests should be conducted to verify design stability.
