铜石棉衬垫 Asbestos-copper gasket ; copper gasket

石棉衬垫 asbestos gasket ; asbestos lining

铜包石棉衬垫 copper-asbestos packing

滑脂棉衬垫 grease cotton packing

无石棉的纤维衬垫 nonasbestos fiber gasket

棉质衬垫 cotton padding