National 7781S Multi-Purpose Seal National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles. Delivers quality and reliable performance for every type of repair Temperature range: -40DegF to 225DegF / -40DegC to 107DegC Good low temperature capability Low swell in hydrocarbon fluids Design type: springless; single-lip Package Dimensions: 2.750 x 0.688 x 2.750 inches Package Weight: 0.057 lb Package Quantity: 1 UPC: 724956184194 Housing Bore: 1.983 IN Housing Bore: 50.370 MM Inside Diameter: 1.250 IN Inside Diameter: 31.750 MM Material: Nitrile Outside Diameter: 1.987 IN Outside Diameter: 50.470 MM Sealing Material: Nitrile Series: 7000 Shaft Diameter: 1.250 IN Shaft Diameter: 31.750 MM Thickness: 0.250 IN Thickness: 6.350 MM Type: 203 Unit of Dimension: Inch Width: 0.250 IN Country of Origin: MX