A nitrogen gas bladder is the rubber membrane inside a piggyback or remote reservoir that separates pressurised nitrogen from damper oil. Sourcing one well comes down to four decisions: the NBR or HNBR grade, wall and neck geometry, a permeation limit, and bu...

Piggyback shocks sometimes have an internal floating piston that separates oil and nitrogen. More commonly, a rubber bladder reservoir holds the gas separately, and this air bag tank arrangement is less likely to leak than a separate piston seal. Main feature...