Sprinco is a trusted supplier of inserts and O-rings for OEM clients, known for delivering high-standard components. Identifying a market need for genuine "mil-spec" components with consistent quality, Sprinco enhanced their offerings by collaborating with top-tier injection molding vendors and developing their own molds. This initiative allows them to provide proprietary solutions that exceed mil-spec performance requirements, all at competitive prices. Avoid the risks associated with US Commercial grade hardware store products or foreign imports with questionable origins and potentially inferior materials. Sprinco's dedication to excellence is reflected in their products, all made in the USA from superior-grade materials. Their black extractor spring Inserts meet the rigorous standards of MIL-PRF-6855-REV G and their Viton CRANE O-rings comply with the demanding specifications of MIL-R-83248C. Choose Sprinco for reliability, performance and peace of mind, knowing you have components engineered to excel. Sprinco USA manufactures mil-spec extractor inserts and O-rings that surpass standard specifications by utilizing proprietary high-quality molds and materials All Sprinco products are manufactured in the USA, guaranteeing the use of superior-grade base materials compared to commercial or foreign imports The black extractor spring inserts and viton CRANE O-rings comply with specific military specifications - mil-prf-6855-rev g and mil-r-83248c