Washer to suit BSPP male thread. Flat Copper Washer - Imperial. 3/4" 32.9 x 27 x 1.4. 1/2" 28. 2 x 21.4 x 1.4. 1" 39.8 x 33.2 x 1.4. 2" 71.6 x 59.7 x 1.5.
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