Piston Cup Kit 3.5 Inch for Kerr KT-3350PT/KA-3500PT
The Piston Cup Kit 3.5 Inch for Kerr KT-3350PT/KA-3500PT supplies the flexible piston cup sealing element for the fluid end of reciprocating pumps. The cup seals against the cylinder liner bore as the piston reciprocates and is a routine wear part. This 3.5 inch kit fits Kerr models KA-3500PT, T-35 and T-40, and is an aftermarket replacement cross-referenced to Kerr part KA-260-350.
What it is
A piston cup is the flexible sealing element fitted to the piston in the fluid end. It maintains the seal against the cylinder liner bore as the piston reciprocates, so wear here directly affects volumetric efficiency.
Pump compatibility
- KA-3500PT
- T-35
- T-40
Specifications
| Property | Value |
|---|---|
| Weight | 0.50 lb (≈ 0.23 kg, converted) |
| Width | 8.8 cm |
| Height | 8.8 cm |
| Depth | 3.3 cm |
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KA-260-350.
FAQ
- Which pumps does this 3.5 inch cup kit fit?
- It fits Kerr models KA-3500PT, T-35 and T-40.
- What is the cross-reference part number?
- This is an aftermarket replacement cross-referenced to Kerr part KA-260-350. The brand and part number are used for identification and comparison only and do not imply OEM manufacture.
- What does the piston cup do?
- The piston cup is the flexible sealing element on the piston in the fluid end. It seals against the cylinder liner bore during reciprocation, so wear here affects volumetric efficiency.
Related parts
All brand names, model numbers and part numbers are used for identification and cross-reference only and do not imply original-equipment manufacture. This is an aftermarket replacement part.
Need a quote or part lookup? Contact our team.