Product Overview

The CAT Water Seal Kit 31040 is a comprehensive replacement seal and packing kit designed for CAT 3531, 3535, and 3537 high-pressure plunger pumps. This complete service kit contains V-packings, low-pressure seals, O-rings, and backup rings required to restore sealing performance, prevent leakage, and maintain maximum pump efficiency.

Featuring a 39mm internal diameter and 57mm external diameter, this kit is ideal for scheduled maintenance and pump overhauls in demanding industrial and commercial pressure washing applications.

Specifications

• SKU: 31040
• Compatible Pumps: CAT 3531, 3535, 3537
• Internal Diameter: 39mm
• External Diameter: 57mm
• Application: Water seal and packing replacement

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Kit Contents

• 6 x V-Packing-STG
• 3 x Seal, LPS w/SS-Spg-NBR
• 6 x O-Ring, D.V Spacer-90D-NBR
• 6 x Backup Ring, Spacer-D
• 3 x O-Ring, I.M-70D-NBR
• 3 x O-Ring, Ret, Plgr-70D-NBR

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Key Features

• Suitable for CAT 3531, 3535 and 3537 pumps
• Complete seal and packing service kit
• Includes six heavy-duty V-packings
• Low-pressure seals with stainless steel spring support
• Supplied with spacer O-rings and backup rings
• Includes inlet manifold and plunger retainer O-rings
• Helps eliminate leaks and maintain operating pressure
• Ideal for preventative maintenance and pump rebuilds

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Why Choose This Product?

Regular seal and packing replacement is essential for maintaining the reliability and efficiency of CAT high-pressure pumps. The CAT 31040 Seal Kit contains all the critical sealing components needed during servicing, helping to reduce downtime, restore pressure performance, and protect internal pump components from premature wear.

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Order Now

Keep your CAT 3531, 3535, or 3537 pump operating at peak performance with the CAT Water Seal Kit 31040. Available from Flowjet Cleaning Equipment with expert advice and fast UK delivery.

Flowjet Cleaning Equipment LTD
Unit 4, Gatebeck Farm
Gatebeck, Kendal
LA9 7FP
United Kingdom

Phone: 015395 66193
Email: sales@flowjet.co.uk