Characteristics and performance
The secondary sealing lip located behind the primary sealing lip improves stability of the seal in the gland. The Hallite 658 is designed to replace an O-ring and one backup sealing arrangement and offer a much higher level of sealing performance and durability without having to change the seal groove.
The Hallite 658 is molded in Hythane® 181, Hallite’s high-performance polyurethane, for easy installation and excellent low temperature performance. The Hallite 658 is also offered in other high quality Hythane® materials to match the needs of the application.
Product details
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Max pressure *
Temp range
Max speed
* Max pressure stated is dependant on the material variant selected. Please consult the datasheet for further information.
- Recomended
- Possible
- Not suitable
* For fluid types marked as possible, please call our team of experts on +44 208 941 2244 to talk through your requirements and determine if this seal is the most suitable for your needs.
Dynamic application | Static application | |
---|---|---|
Fluids based on mineral oil | ||
Any | Recommended | Recommended |
Waterbased fluids | ||
HFA (5/95) | Possible | Possible |
HFB (60/40 invert emulsion) | Recommended | Recommended |
HFC (water glycol) | Possible | Possible |
Water | Possible | Possible |
Other fluid types | ||
Air/Nitrogen | Possible | Possible |
HFD (Phosphate ester ARYL Type) | Not suitable | Not suitable |
Synthetic esters (HEES, HFDU) | Recommended | Possible |