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Type BU / rectangular, uncut (Custom) - BUYS000050POM71
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 Outside22.23 mm
Ring Diameter Inside15.40 mm
Signature StandardBUYS000050POM71
Type of Article1
Article Code with 6 char50
Root Ring Inside Diameter15.40 mm
Compound codePOM71
Root Ring Outside Diameter22.23 mm
Ring Thickness3 mm
Article GroupBU
Location MarkYS
Root Ring Thickness3 mm
Material Information for the product(s) on this page
POM71
Shore D Hardness:
85+/- 3
Gravity Tolerance:
+/-0.02
Minimum Hardness:
85
Gravity Unit:
g/cm³
Material:
POM71
Specific Gravity:
1.41
Material Type:
POM
Minimum Temperature:
-45
Maximum Hardness:
85
Ball Hardness:
160
Maximum Temperature:
100
Color:
White
Hardness Tolerance:
+/- 3
Material Code Class:
Thermoplastic
Hardness unit:
Shore D