575-242 BACK UP RING 90URE-4X1/8-C/S(5)
575-244 BACK UP RING 90URE-4.25X1/8-C/S(5)
575-245 BACK UP RING 90URE-4.375X1/8-C/S(5)
575-246 BACK UP RING 90URE-4.5X1/8-C/S(5)
575-247 BACK UP RING 90URE-4.625X1/8-C/S(5)
575-248 BACK UP RING 90URE-4.75X1/8-C/S(1)
575-248T BACK UP RING TFE-4.75X1/8-C/S(2)
575-249 BACK UP RING 90URE-4.875X1/8-C/S(1)
575-250 BACK UP RING 90URE-5X1/8-C/S(1)
575-251 BACK UP RING 90URE-5.125X1/8-C/S(1)