Double Lip Seal is used with SNA, SNH and SNL housings. It is split type, which makes mounting and dismounting simple. It is made of poly-urethane (synthetic rubber), a wear-resistant material with excellent resilient properties.
Double Lip seal is designated as TG or TSNA 500G & TSNA 600G
It can be used with grease lubrication at peripheral speeds up to 8 meter/sec. The maximum permissible misalignment of the shaft is approximately 1degree. for a shaft diameter up to 100 mm and 0.5. degree for larger size. It is recommended that the surface roughness of shaft should not exceed Ra=3.2 micro mm for better efficiently of seal.
Double Lip Seals are suitable for temperature range of -1000 C to 4000 C, axial shaft displacement and vertical mounting, but unsuitable with oil lubrication. They are suitable for all external conditions like dust, sand, grit, sharp objects, chippings, splinters, splashing fluids and sunshine.