APPROVED VENDOR Piston Seal Kit: For 8 in Bore Dia., Buna N, Black, -40° to 250°F
The APPROVED VENDOR Piston Seal Kit (SKU 4PKJ4) is a piston seal kit designed for an 8 in bore diameter. It includes six pieces: two each of 80 Durometer Buna U-Cups, Hytrel Backup Rings, and 70 Durometer Buna…
SKU 3G-OTH-162081
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Product Description
The APPROVED VENDOR Piston Seal Kit (SKU 4PKJ4) is a piston seal kit designed for an 8 in bore diameter. It includes six pieces: two each of 80 Durometer Buna U-Cups, Hytrel Backup Rings, and 70 Durometer Buna O-Rings, all in black Buna N material. The kit operates within a temperature range of -40° to 250°F.
Frequently Asked Questions
What is the APPROVED VENDOR Piston Seal Kit 4PKJ4 used for?
This piston seal kit is used to rebuild pneumatic or hydraulic cylinders with an 8 in bore diameter. It includes Buna U-cups, backup rings, and O-rings to prevent fluid bypass and maintain pressure. Common in industrial machinery, material handling, and automation equipment across 14 departments.
What are the specifications of the APPROVED VENDOR 4PKJ4 piston seal kit?
The kit fits an 8 in bore diameter and contains six pieces: two 80 Durometer Buna U-cups, two Hytrel backup rings, and two 70 Durometer Buna O-rings. Material is black Buna N, rated for -40° to 250°F. Manufactured by APPROVED VENDOR under MPN 4PKJ4.
Where to buy the APPROVED VENDOR 4PKJ4 piston seal kit worldwide?
3G Electric supplies the APPROVED VENDOR 4PKJ4 piston seal kit worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this kit to your facility. Contact us for availability and lead time.
How to install the APPROVED VENDOR 4PKJ4 piston seal kit?
Clean the cylinder bore and piston groove thoroughly. Lubricate the seals with compatible hydraulic oil. Install the U-cup with the lip facing the pressure side, then seat the backup ring and O-ring. Avoid sharp tools to prevent seal damage. Torque to manufacturer specs.
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3G Electric supplies APPROVED VENDOR piston seal kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













