Semroc Centering Ring Wound Craft Paper BT-5 to BT-20 by 1/8"(1pk)(EB-20) SEM-CR-5-20-1/8
also Engine Block 20 (EB-20)
Spiral Kraft Wound Paper Ring for centering an BT-5 motor tube inside a BT-20 tube
ID = 0.559"
OD = 0.71"
Thickness = 0.125"
Made in the USA
Use them for a bt-20 thrust ring, very well made
Perfect fit
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk) SEM-CR-20-50-1/8
Semroc Centering Ring Wound Craft Paper BT-3 to BT-5(1pk) SEM-CR-3-5 Also used as a Thrust Block or Engine Block
Semroc Centering Ring Wound Craft Paper BT-4 to BT-5(1pk) SEM-CR-4-5 1 pack
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk)(same CR-20-50-1/4) SEM-AR-2050 Wound craft paper rings for centering a BT-20 motor tube inside a BT-50 tube
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk) SEM-CR-20-50-1/8
Semroc Centering Ring Wound Craft Paper BT-3 to BT-5(1pk) SEM-CR-3-5 Also used as a Thrust Block or …
Semroc Centering Ring Wound Craft Paper BT-4 to BT-5(1pk) SEM-CR-4-5 1 pack
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk)(same CR-20-50-1/4) SEM-AR-2050 Wou…
