English
Back-up Ring Type BD / concave, cut is a high-performance support ring designed to prevent seal extrusion in high-pressure applications. Featuring a concave profile and a cut design for easy installation, it is used behind O-Rings to enhance sealing reliability. Ideal for static and dynamic applications, this back-up ring offers excellent pressure resistance and extends seal life in hydraulic and pneumatic systems.
BU Concave cut OD:
Ring Width4.35 mm
Ring Diameter Outside180 mm
Ring Diameter Inside171.3 mm
Location Mark43
Signature StandardBD43HO1800POM71
Type of Article1
Article Code with 6 charHO1800
Root Ring Inside Diameter171.3 mm
Article GroupBD
Root Ring Outside Diameter180 mm
Root Ring Thickness4.35 mm
Root Ring Width1.7 mm
Ring Thickness1.7 mm
Compound codePOM71
Material Information for the product(s) on this page
POM71
Specific Gravity:
1.41
Gravity Unit:
g/cm³
Maximum Temperature:
100
Hardness unit:
Shore D
Material Code Class:
Thermoplastic
Color:
White
Minimum Hardness:
85
Minimum Temperature:
-45
Ball Hardness:
160
Material:
POM71
Maximum Hardness:
85
Hardness Tolerance:
+/- 3
Gravity Tolerance:
+/-0.02
Material Type:
POM
Shore D Hardness:
85+/- 3