Nylon Shock Cord (2 sizes) per yard

You know that little white elastic band that's used for a shock cord...? ...It belongs in your underpants.

OUR shock cords...? ...they belong in your rocket!!

TECH NOTE: Our suggestions may not fit your application. Never use “elastic” cords. Elastic cords store the energy of separation and release it by slamming the rocket parts back together, damaging your rocket. Also, elastic-type cords have low breaking strengths. Elastic is for underpants, not for high power rockets. Instead, use a generous amount of non-stretch cord and let air resistance absorb the energy of release. We recommend 15+ feet of cord for up to 4” diameter rockets, and 20+ feet for larger rockets.

9/16" Extra strength flat strap
Heavy duty For up to 4" rockets
2,000 LBS Test! MIL(C) Spec 5625

1" Tubular Nylon
For 3" and larger rockets
4,000 LBS Test! MIL(C) Spec 5625