... well, oil field, construction, geothermal, directional boring, and underground foundation work Formationsticky, soft, medium hard, hard ... -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 1/8”),133.3mm(5 1/4”),139.7mm(5 1/2”),142.8mm(5 5/ ...