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
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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)

18000140-01 N/A 0.150 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.150 in3.81 mm N/A 0.012 in0.3 mm
18000141-01 N/A 0.187 Inch (in) Inside Diameter Compression Ring N/A 0.375 in9.53 mm N/A 0.187 in4.75 mm N/A 0.020 in0.510 mm
18000142-01 N/A 0.192 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.192 in4.88 mm N/A 0.012 in0.3 mm
18000143-01 N/A 0.192 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.192 in4.88 mm N/A 0.017 in0.430 mm
18000144-01 N/A 0.224 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.224 in5.69 mm N/A 0.012 in0.3 mm
18000145-01 N/A 0.224 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.224 in5.69 mm N/A 0.014 in0.36 mm
18000146-01 N/A 0.224 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.224 in5.69 mm N/A 0.017 in0.430 mm
18000147-01 N/A 0.224 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.224 in5.69 mm N/A 0.020 in0.510 mm
18000148-01 N/A 0.230 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.230 in5.84 mm N/A 0.017 in0.430 mm
18000149-01 N/A 0.234 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.234 in5.94 mm N/A 0.012 in0.3 mm
18000150-01 N/A 0.234 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.234 in5.94 mm N/A 0.012 in0.3 mm
18000151-01 N/A 0.234 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.234 in5.94 mm N/A 0.020 in0.510 mm
18000152-01 N/A 0.261 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.261 in6.63 mm N/A 0.012 in0.3 mm
18000153-01 N/A 0.261 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.261 in6.63 mm N/A 0.014 in0.36 mm
18000154-01 N/A 0.261 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.261 in6.63 mm N/A 0.017 in0.430 mm
18000155-01 N/A 0.261 Inch (in) Inside Diameter Compression Ring N/A 0.125 in3.18 mm N/A 0.261 in6.63 mm N/A 0.020 in0.510 mm
18000156-01 N/A 0.261 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.261 in6.63 mm N/A 0.020 in0.510 mm
18000157-01 N/A 0.270 Inch (in) Inside Diameter Compression Ring N/A 0.200 in5.08 mm N/A 0.270 in6.86 mm N/A 0.017 in0.430 mm
18000158-01 N/A 0.271 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.271 in6.88 mm N/A 0.014 in0.36 mm
18000159-01 N/A 0.284 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.284 in7.21 mm N/A 0.014 in0.36 mm
18000160-01 N/A 0.284 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.284 in7.21 mm N/A 0.020 in0.510 mm
18000161-01 N/A 0.294 Inch (in) Inside Diameter Compression Ring N/A 0.250 in6.35 mm N/A 0.294 in7.47 mm N/A 0.014 in0.36 mm
18000162-01 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 0.012 in0.3 mm
18000163-01 N/A 0.300 Inch (in) Inside Diameter Compression Ring N/A 0.188 in4.78 mm N/A 0.300 in7.62 mm N/A 0.014 in0.36 mm
18000164-01 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 0.014 in0.36 mm
Unit of Measure
1 2 3 4