645-0827
3.5 X 107.5mm 78A HNBR O-Ring
HNBR elastomer O-ring measuring 3.5 mm cross-section by 107.5 mm inner diameter.
Description
Seals coolant pipe flanges on the lower water pump and line assemblies. The 78 Shore A HNBR compound stays flexible around hot antifreeze blends and resists taking a set under thermal cycling. 3.5 mm cross-section by 107.5 mm inner diameter 78A…
Overview
Seals coolant pipe flanges on the lower water pump and line assemblies. The 78 Shore A HNBR compound stays flexible around hot antifreeze blends and resists taking a set under thermal cycling.
Features
- 3.5 mm cross-section by 107.5 mm inner diameter
- 78A durometer hydrogenated nitrile (HNBR)
- Handles typical ethylene and propylene glycol coolants
- Heat-set resistant
Applications
- Lower cooling unit pipe connections and water manifold flanges
Specifications
| Brand | Caterpillar |
|---|
Related parts
3.5 x 31.7mm 78A HNBR O-Ring
255-5594
Similar part
1.78 x 26.7mm 78A HNBR O-Ring
9X-7384
Similar part
5.33 x 23.16mm 78A HNBR O-Ring
114-2687
Similar part
5.33 x 97.79mm 78A HNBR O-Ring
109-0080
Similar part
1.78 x 7.65mm 78A HNBR O-Ring
9X-7380
Similar part
2.46 x 19.18mm 78A HNBR O-Ring
114-4427
Similar part
1.78 x 14mm 78A HNBR O-Ring
9X-7382
Similar part
5.33 x 211.19mm 78A HNBR O-Ring
134-5958
Similar part
OEM & Aftermarket
Compatible parts for major brands
Global shipping
Delivering to 50+ countries
Need help?
Contact our team for support