	US 11,835,137 B2
	Sealing member for mechanical seals
Shunsuke Abe, Kanagawa (JP); and Hideyuki Murakami, Kanagawa (JP)
Assigned to NOK CORPORATION, Tokyo (JP)
Appl. No. 16/647,552
Filed by NOK CORPORATION, Tokyo (JP)
PCT Filed Aug. 21, 2018, PCT No. PCT/JP2018/030829 § 371(c)(1), (2) Date Mar. 16, 2020, PCT Pub. No. WO2019/058840, PCT Pub. Date Mar. 28, 2019.
Claims priority of application No. 2017-178532 (JP), filed on Sep. 19, 2017.
Prior Publication US 2020/0217418 A1, Jul. 9, 2020
Int. Cl. F16J 15/3284 (2016.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08K 5/14 (2006.01); C08L 15/00 (2006.01); F04D 29/12 (2006.01)

CPC F16J 15/3284 (2013.01) [C08K 3/04 (2013.01); C08K 3/22 (2013.01); C08K 5/14 (2013.01); C08L 15/005 (2013.01); C08K 2003/2241 (2013.01); F04D 29/126 (2013.01)]

6 Claims

1. A static sealing member, which is a peroxide vulcanized molded article of a hydrogenated nitrile rubber composition comprising 20 to 100 parts by weight of silica and 0.5 to 3 parts by weight of silane coupling agent, based on 100 parts by weight of hydrogenated nitrile rubber having a bound acrylonitrile content of less than 20% and an iodine number of 20 mg/100 g or less,

wherein the static sealing member is

a cup gasket or

a bellows of a mechanical seal of a water pump.