Description A specially developed grade of nitrile (acrylonitrile-butadiene NBR) elastomer for the manufacture of moulded seals, precision cut gaskets, extruded profiles and other flexible products that are subjected to high levels of ionising radiation.
Typical applications General fluid sealing duties in the presence of ionising radiation, especially where there is contact with mineral oils or hydraulic fluids.
Specifications Evaluated for resistance to ionising radiation by monitoring changes in important physical properties over time while irradiated with gamma radiation. Further information on these tests as carried out by independent test house Centronic Raditec and James Walker Technology Centre can be supplied to customers on request.
Special features
Excellent radiation resistance.
Excellent compression set resistance for efficient long-term fluid sealing.
Excellent resistance to mineral oils and hydraulic fluids.
Resistant to wear and abraison.
Long service life.
Excellent value for money.
Operational properties of Shieldseal® 621 Hardness: 60 IRHD Compression set: 18%, when irradiated with a total dose of 100kGray @ 65°C. Chemical properties: Excellent resistance to mineral oils, hydraulic fluids (including water/glycol grades) and a wide range of chemicals.
(Note: Separate literature is available containing full details of third-party and in-house tests.)
How supplied Shieldseal® 621 is available as moulded products, precision cut gaskets and extruded profiles. We are also willing to partner with equipment manufacturers and end-users to develop, prototype and evaluate materials or specific components for custom applications.
Click here to download the full Shieldseal elastomers for use with ionising radiation lealfet pdf (739KB)
Description
