Shopping Cart (0) Quotes (0) Express Ordering All Categories > Piping > HDPE Butt Fittings > Butt Backing Rings > Advanced Search Advanced Search in Butt Backing Rings Unit of Measure Imperial Metric Both Dimensions Dimension D (in) No Preference 6.378 7.638 9.016 11.142 13.583 16.220 19.173 Dimension k (in) No Preference 4.750 6.000 7.500 9.500 11.750 14.250 17.000 Dimension D2 (in) 0.787 0.866 0.984 Dimension d6 (in) No Preference 3.071 4.370 5.236 7.008 9.291 11.339 13.307 Dimension b (in) 0.709 0.945 1.063 1.260 Clear Cancel Advanced Search