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Type BU / rectangular, uncut (Custom) - BUYF000170N8M71
Back-up Ring Type BU is a rectangular, uncut support ring used to prevent seal extrusion in high-pressure applications. Designed for static and dynamic systems, it is installed behind O-Rings or other primary seals. Made from durable materials like PTFE or elastomers, the BU ring enhances sealing performance, extends service life, and ensures reliable operation in hydraulic and pneumatic environments. This is a Custom Article Number with a Customer Specific Design.
BU Rectangular solid ID:
Ring Diameter Outside43.30 mm
Ring Diameter Inside35.30 mm
Signature StandardBUYF000170N8M71
Type of Article1
Article Code with 6 char170
Root Ring Inside Diameter35.30 mm
Compound codeN8M71
Root Ring Outside Diameter43.30 mm
Root Ring Width4 mm
Ring Thickness4 mm
Ring Width4.30 mm
Article GroupBU
Location MarkYF
Root Ring Thickness4.30 mm
Material Information for the product(s) on this page
N8M71
Color:
Black
Hardness unit:
Shore A
Gravity Tolerance:
+/-0.02
Hardness Tolerance:
+/- 5
Material Type:
NBR
Shore A Hardness:
80+/- 5
Gravity Unit:
g/cm³
Material Code Class:
Elastomer
Maximum Temperature:
110
Minimum Hardness:
80
Specific Gravity:
1.27
Material:
N8M71
Maximum Hardness:
80
Minimum Temperature:
-50