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 2925-01-222-7764
NSN 5950-01-047-8105
NSN 5990-00-965-9611
NSN 5945-01-251-8020
NSN 5975-01-310-5126
NSN 6685-00-575-4647
NSN 6685-01-087-4432
NSN 5985-00-832-9486
NSN 5960-00-539-7914
NSN 5990-00-412-0019
NSN 5985-00-472-7848
NSN 5996-01-105-4842