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 5895-00-518-1593
NSN 6685-00-955-1232
NSN 6145-00-132-4800
NSN 6320-01-015-9856
NSN 6145-01-229-2560
NSN 6645-01-124-1584
NSN 5925-01-334-8402
NSN 7035-01-361-8821
NSN 5950-00-643-0080
NSN 5915-01-027-5067
NSN 7035-00-009-8705
NSN 2925-00-157-1602