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O-Ring / Backup Ring
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Part No.
Installation dimensions
  • Inside Diameter ID
    mm
  • Outside Diameter OD
    mm
  • Groove section H1
    mm
  • Groove Width H2
    mm

O-Ring / Backup Ring

O-rings are O-shaped ring packings, and are used to seal fluids and dust. NOK has a broad lineup of rubber materials that can meet various service conditions. O-rings are ring packings with an O-shaped cross-section. O-rings are placed in groove portions and pressed in moderately before being used to prevent leakage of fluids, such as oil, water, air, gas, and others.

O-R1B P90

O-R1B P90

O-R1B P85

O-R1B P85

O-R1B P80

O-R1B P80

O-R1B P75

O-R1B P75

O-R1B P60

O-R1B P60

O-R1B P55

O-R1B P55

OR1B P54

OR1B P54

O-R1B P40

O-R1B P40

OR EPDM 70

OR EPDM 70

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR FKM 75

OR FKM 75

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR FKM 80

OR FKM 80

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR FKM 90

OR FKM 90

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR HNBR 70

OR HNBR 70

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR NBR 70

OR NBR 70

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR NBR 70 BIB

OR NBR 70 BIB

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR PTFE

OR PTFE

PTFE O-rings are used for axial static sealing such as caps and flanges when the operating conditions...
OR NBR 80

OR NBR 80

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR NBR 90

OR NBR 90

Dimensional tolerances according to DIN ISO 3601-1, industry class B
OR VMQ 70

OR VMQ 70

Dimensional tolerances according to DIN ISO 3601-1, industry class B