The JIC 380621A1 backup ring is engineered to improve sealing stability and reduce leakage in demanding hydraulic systems. It helps protect O-rings from extrusion, extends service life, and supports reliable performance in industrial and construction machinery applications.
The JIC 380621A1 backup ring is a high-performance sealing support component designed for hydraulic cylinder applications. It is used together with O-rings to improve sealing reliability, prevent extrusion, and reduce leakage in equipment operating under pressure.
This PU backup ring is suitable for Case machinery parts including 580SM, 821E, and 821F applications. With dependable durability and sealing protection, it helps improve equipment efficiency and reduce downtime in industrial and construction machinery systems.
For hydraulic systems facing leakage, seal extrusion, or unstable cylinder performance, the JIC 380621A1 backup ring provides an effective sealing support solution. It works with O-rings to enhance pressure resistance, protect sealing components, and improve long-term reliability in Case machinery and related hydraulic equipment.
| Machine Type | Model | Application | Cylinder No. | Serial Numbers |
|---|---|---|---|---|
| Excavator | 320C | Bucket | 2043696 | AMC1-UP; ANB1-UP; GHA1-UP; GNG1-UP |
| Excavator | 320C L | Bucket | 2043696 | AMC1-UP; ANB1-UP; GHA1-UP; GNG1-UP |
| Excavator | 320C LU | Bucket | 2043696 | BBE1-UP; BBL1-UP; BCN1-UP |
| Excavator | 320C U | Bucket | 2043696 | BBE1-UP; BBL1-UP; BCN1-UP |
| Excavator | 322C | Bucket | 2043696 | BKM1-UP; BLP1-UP |
| Excavator | 322C L | Bucket | 2043696 | BKM1-UP; BLP1-UP |
* All manufacturer's names, part numbers, and descriptions are used for reference purposes only. We do not imply that any part shown is the product of these manufacturers.
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.
