CASE 446178A1 / JIC-446178A1 PU backup ring supports O-rings in hydraulic and industrial sealing systems, helping reduce extrusion risk, improve sealing reliability, and maintain efficient equipment operation.
The CASE 446178A1 / JIC-446178A1 PU backup ring is designed as a support component for O-ring sealing systems. It helps improve sealing stability by reducing the risk of O-ring extrusion or deformation under pressure, contributing to better leakage prevention and reliable equipment performance.
This backup ring is suitable for a wide range of industrial and hydraulic applications, especially when used with AS568 standard O-rings. It is ideal for maintenance, seal replacement, and bulk assembly requirements, offering dependable sealing support for machinery, hydraulic systems, and industrial equipment.
For hydraulic or industrial equipment where O-rings may suffer extrusion, deformation, or leakage under pressure, the CASE 446178A1 PU backup ring provides additional sealing support. It improves O-ring resistance to extrusion, extends seal service life, reduces maintenance downtime, and is suitable for bulk replacement and long-term stable operation.
| 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.
