Piston Cup
Piston Cup Kit 4.00 Inch for Kerr KT-3350PT/KA-3500PT
- Catalogue reference number
- KA-260-400
- Catalogue brand
- Kerr
Catalogue fields identify reference material. They do not confirm stock, OEM authorization or interchange. Verify the nameplate, original number and edition.
Catalogue model references
These are retained catalogue associations, not confirmed fitment for your equipment. Choose the model you want to review.
Catalogue specification records
| Original field | Recorded value |
|---|---|
| Weight | 0.86 lb (≈ 0.39 kg, converted) |
| Width | 10.4 cm |
| Height | 10.4 cm |
| Depth | 3.8 cm |
Catalogue description records
The Piston Cup Kit 4.00 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 4.00 inch kit fits models JT7020, KA-3500PT, KT-3350PT, T-35, T-40, T50 and T50-PT, and is an aftermarket replacement cross-referenced to Kerr part KA-260-400.
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.
Catalogue question records
Original catalogue questions are retained. Fitment and availability need technical review.
- Which pumps does this 4.00 inch cup kit fit?
- It fits models JT7020, KA-3500PT, KT-3350PT, T-35, T-40, T50 and T50-PT.
- What is the cross-reference part number?
- This is an aftermarket replacement cross-referenced to Kerr part KA-260-400. 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.
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