Hydraulic Cylinder Seal Kit CT-1261937 is an OEM aftermarket replacement kit for Caterpillar E320B boom cylinders, designed for 85x120mm cylinders to prevent leaks, restore sealing performance, and improve hydraulic system reliability in heavy machinery.
Replacing Seals in a Hydraulic Cylinder CT-1261937 E320B is designed for Caterpillar 320B, 320B L, 320B N, 320B Forest Machine, 320B U, and 320B LU boom cylinder applications. It helps prevent hydraulic oil leakage, maintain cylinder pressure, and support smooth boom operation in construction, forestry, and heavy-duty working conditions.
This new OEM aftermarket seal kit is a direct replacement for original parts and is not branded Caterpillar®. With 85 mm rod and 120 mm bore specifications, it provides a high-quality and cost-effective solution for hydraulic cylinder rebuilding, equipment maintenance, and performance restoration.
JSPSEAL provides reliable CT-1261937 hydraulic cylinder seal kit solutions for Caterpillar E320B boom cylinder repair. With accurate 85x120mm fitment, flexible MOQ, fast delivery for small orders, and stable weekly supply capacity, we help repair shops, distributors, and equipment owners replace worn seals, reduce leakage, and minimize downtime efficiently.
| ITEM | ID | OD | H |
| JSOUY | 25 | 40 | 12 |
| JSOUY | 35 | 50 | 12 |
| JSOUY | 35 | 60 | 15.5 |
We ship worldwide via DHL, FedEx, UPS, TNT, and EMS for small orders, and by sea freight for bulk orders. Standard delivery time is 5–7 working days for small orders and 15–30 days for sea freight.
All products are carefully packaged in neutral packaging with foam protection to prevent damage during transit. Custom packaging with your branding is available for OEM orders.
We accept multiple payment methods for your convenience. For new customers, we typically require 100% advance payment for small orders. For established partnerships, we offer flexible terms including 30% deposit with balance before shipping.
