MS-131-SR
SWAGELOK Pneumatic Spring Return Actuator, SS-42GS4-SC11-31C, MS-131-SR #1649Q8
What stands out is the ease with which these inserts can be removed and replaced.
Tag & Label Tag, Blank, Vinyl, 5 in H x 3 1/8 in W, Yellow, Rectangle, 25 PK
A nice touch with BSTFLEX is the thoughtful placement of stress points.