... can be 0.1mm by compression.Perkins Oil Seal with Good Performance descriptions: Materialscan be ACM, NBR perkins oil seal ... -oxidation, oil proof, weather resistant, heat proof, good elasticity, anti-oxidation, resistant to flexural deformation perkins ... oil seal, etc.CertificationsAll manufacturing processes are complied with ISO9001:2008 and TS16949.Materials approvedMaterials meet RoHS directive ...