EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
Print Back
Compression Rings were originally developed for use in all types of knob-to-shaft applications on thermoplastic nobs with split hubs. They are also used as a Compression Limiter inside a bolt hole, to protect plastics from cracking when the bolt is tightened.
Compression Rings
Unit of Measure
1 2 3 4 

Item #

Item Name

Band Width (Decimal)

Inside Diameter

Material Thickness (Decimal)

18000164-25 N/A 0.300 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.300 in7.62 mm N/A 0.014 in0.36 mm
18000165-01 N/A 0.300 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.300 in7.62 mm N/A 0.017 in0.430 mm
18000166-01 N/A 0.300 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.300 in7.62 mm N/A 0.017 in0.430 mm
18000167-01 N/A 0.300 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.300 in7.62 mm N/A 0.020 in0.510 mm
18000168-01 N/A 0.300 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.300 in7.62 mm N/A 0.025 in0.64 mm
18000169-01 N/A 0.312 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.312 in7.92 mm N/A 0.014 in0.36 mm
18000170-01 N/A 0.312 Inch (in) Inside Diameter Compression Ring N/A 0.375 in9.53 mm N/A 0.312 in7.92 mm N/A 0.017 in0.430 mm
18000171-01 N/A 0.312 Inch (in) Inside Diameter Compression Ring N/A 0.375 in9.53 mm N/A 0.312 in7.92 mm N/A 0.020 in0.510 mm
18000172-01 N/A 0.317 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.317 in8.05 mm N/A 0.012 in0.3 mm
18000173-01 N/A 0.317 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.317 in8.05 mm N/A 0.014 in0.36 mm
18000174-01 N/A 0.317 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.317 in8.05 mm N/A 0.017 in0.430 mm
18000175-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.324 in8.23 mm N/A 0.011 in0.28 mm
18000176-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.324 in8.23 mm N/A 0.014 in0.36 mm
18000177-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.187 in4.75 mm N/A 0.324 in8.23 mm N/A 0.017 in0.430 mm
18000178-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.324 in8.23 mm N/A 0.014 in0.36 mm
18000179-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.324 in8.23 mm N/A 0.017 in0.430 mm
18000180-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.324 in8.23 mm N/A 0.025 in0.64 mm
18000181-01 N/A 0.324 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.324 in8.23 mm N/A 0.020 in0.510 mm
18000182-01 N/A 0.340 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.340 in8.64 mm N/A 0.012 in0.3 mm
18000183-01 N/A 0.340 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.340 in8.64 mm N/A 0.014 in0.36 mm
18000184-01 N/A 0.345 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.345 in8.76 mm N/A 0.020 in0.510 mm
18000185-01 N/A 0.355 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.355 in9.02 mm N/A .015 in0.38 mm
18000186-01 N/A 0.362 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.362 in9.19 mm N/A 0.012 in0.3 mm
18000187-01 N/A 0.362 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.362 in9.19 mm N/A 0.014 in0.36 mm
18000188-01 N/A 0.362 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.362 in9.19 mm N/A 0.014 in0.36 mm
Unit of Measure
1 2 3 4