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
1 pack
ID= 0.371"
OD= 0.515"
Thickness= 0.072"
Length= 0.125"
wound craft paper construction
These rings are a perfect fit in the BT-5 body tube, making for excellent motor blocks/thrust rings.
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-3 to BT-4(1pk) SEM-CR-3-4 1 pack
Semroc Centering Ring Wound Craft Paper BT-2 to BT-4(1pk) SEM-CR-2-4 1 pack ID= 0.281"
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-4 to BT-5(1pk) SEM-CR-4-5 1 pack
Semroc Centering Ring Wound Craft Paper BT-3 to BT-4(1pk) SEM-CR-3-4 1 pack
Semroc Centering Ring Wound Craft Paper BT-2 to BT-4(1pk) SEM-CR-2-4 1 pack ID= 0.281"
Semroc Centering Ring Wound Craft Paper BT-20 to BT-50(1pk) SEM-CR-20-50-1/8
