... poorly compacted shales ,sandstone, clays, salts and soft li mestones. Size and IADC available: 3 3/4" to 26" IADC 415,435, ... o-rin provides adequate sealing for bearing durability .5.size and model we can provide: 60mm,65mm,76mm,93mm, ... 95mm,98mm(3 7/8”),101.6mm,114mm,118mm,120mm,127mm(5”)130.1mm(5 ... .8(9 7/8”)269.8(10 5/8”),295.3(11 5/8”)311.1(12 1/4”),346.0 ...