Elastomeric seal
AssigneeFMC Kongsberg Subsea AS
InventorsAnton Akulichev, Brede Thorkildsen
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Abstract
The present invention provides a seal comprising an elastomeric composite, said composite comprising an elastomeric polymer and a negative thermal expansion (NTE) filler, the NTE filler has a coefficient of thermal expansion (CTE) lower than −6×10-6 K-1 within a temperature range of 220-293 K and is present in an amount of 0.01-50 volume % based on the total volume of the elastomeric composite at 20° C.
Claims26
A pressure containment equipment seal comprising an elastomeric composite, said composite comprising an elastomeric polymer and a negative thermal expansion (NTE) filler, the NTE filler having a coefficient of thermal expansion (CTE) lower than −6×10−6 K−1 within a temperature range of 220-293 K and being present in an amount of 0.01-50 volume % based on the total volume of the elastomeric composite at 20° C., and wherein a surface of the seal is free of the NTE filler and an outer layer of the seal is made of an elastomeric polymer not comprising an NTE filler.
A method for manufacturing a pressure containment equipment seal, the method comprising:
- providing an elastomeric composite comprising an elastomeric polymer and a negative thermal expansion (NTE) filler, the NTE filler having a coefficient of thermal expansion (CTE) lower than −6×10−6 K−1 within a temperature range of 220-293 K and being present in an amount of 1.0-30 volume % based on the total volume of the elastomeric material at 20° C., and wherein a surface of the seal is free of the NTE filler and an outer layer of the seal is made of an elastomeric polymer not comprising an NTE filler;
- and
- forming the elastomeric composite into a desired shape of the seal.
Dependencies are inferred from the claim text.