Rencol’s Model 10 IP plastic spring plungers stand out as one the most versatile products in their range of standard components. Spring plungers are small, spring-loaded mechanical devices which are used as detents, for push-on and push-off applications, as ejectors in manufacturing equipment, for positioning and locating workpieces, and as roller devices for conveyor equipment.
Rencol offers three configurations, all manufactured with a stainless-steel internal spring for excellent strength and resistance to environmental contaminants.
For the greatest strength and durability, a stainless-steel body and ball is available, however for most applications a thermoplastic POM or Acetal polymer will offer a lower cost alternative while retaining high stiffness, low friction, and dimensional stability. Rencol’s Acetal bodied spring plungers are available with an acetal or stainless steel ball.
Comment: Hydrogen requires a long-term mindset
I am not sure that a consensus is possible - unless it goes for liquid hydrogen (as an end product) - as (unless airships are revived) the parasitic...