Product description：Precision Stainless Steel Mechanical Seal1.Material45# steel2. TechnicsMachining,Website: , milling3. MOQ500 sets4. Surface TreatmentPolishing or plating5. Tolerance+/- 0.02mm6. ApplicationMechanical sealing7. OEM orderWelcome8. SpecificationCustom madeThe seal is made by spring stainless steel.