Bonded Seal (USIT-Ring) 13,74 x 20,57 x 2,03 mm 1/4" BSP zinc plated mild Steel/FKM 80 +/- 5 Shore A schwarz/black self centering
D = 20,57 (+/- 0,10) mm
d = 13,74 (+ 0,13 / - 0,0) mm
s = 2,03 (+/- 0,15) mm
A Bonded Seal (also known as Schraubendichtung, USIT-Ring, Dowty Seal, Gummi-Metall-Verbunddichtung) is a self-sealing washer: The Bonded Seal consists of a metal washer (in this case zinc plated mild Steel) with an inner ring made from rubber (FKM).They are used for static sealing of flange joints and fittings from overpressure.