... seals. Which used in family water pumps, industrial pumps, auto cooling-pumps and compressors. The products sell abroad and at ... sealing products1,a convoluted elastomer bellows2, sleeve assmebly: match common shaft sizes: 12mm, 13mm, 15mm, 16mm ,17mm, 20mm, 1/2'', ... 5, high volume use in low pressure, small diameter rotary shaft applications. Auto unitized seal for engine coolant pumps type 6A