A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5960-01-599-9821
NSN 6620-01-517-0014
NSN 2925-00-833-9466
NSN 5999-00-951-5836
NSN 5975-01-442-7264
NSN 2925-01-085-0691
NSN 5905-00-879-6536
NSN 5915-00-837-8995
NSN 6130-01-239-6642
NSN 5975-01-418-5108
NSN 5990-01-452-0911
NSN 7035-01-107-2811