Molded from urethane for resistance to extrusion and abrasion, they employ a hard nylon anti-extrusion ring.
| SEAL INFORMATION | |
|---|---|
| MATERIAL | URETHANE SEAL NYLON BACK-UP |
| TEMPERATURE RANGE | -40° to +200° F |
| SPEED | 3 FT/SEC |
| PRESSURE RANGE | 0 to 3,000 PSI |
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These seals are specifically designed to seal on their inside diameter and engineered to attain maximum life and reliability in dynamic rod sealing. They employ a hard plastic I.D. back-up ring to reduce the possibility of extrusion.
SEAL INFORMATION MATERIAL 92A URETHANE TEMPERATURE RANGE -40° to +230° F PRESSURE RANGE 0 to 6,000 PSI SPEED 3 FT/SEC PART NUMBER (Prefix)(CS) - (ID) - (Height) -
Nylon Step Cut
NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.SEAL INFORMATION MATERIAL GLASS FILLED NYLON SEAL RUBBER ENERGIZER TEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 6,000 PSI SPEED 3 FT/SEC PART NUMBER (Piston Seal)(Type of Seal) - (Size) - (Groove Width) -
SEAL INFORMATION TENSILE STRENGTH 35,000 PSI YIELD STRENGTH 18,000 PSI PART NUMBER (Prefix) - (ID) (CS) - (Width) -
Installed as 2 halves in a closed groove, these bushings are found in many Japanese lift trucks.
SEAL INFORMATION MATERIAL 660 BRONZE SPEED 3 FT/SEC PART NUMBER (Prefix) - (ID) x (OD) X (H) -
For two piece pistons, this seal incorporates a nitrile / fabric seal with two split bearings.
SEAL INFORMATION MATERIAL NITRILE SEAL
ACETAL BEARINGTEMPERATURE RANGE -22° to +190° F PRESSURE RANGE 0 to 5,000 PSI SPEED 1.5 FT/SEC -
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) -
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-UPSTEMPERATURE RANGE -40° to +220° F PRESSURE RANGE 0 to 6,000 PSI