HC-5000-12 has a 5.75 in OD and is made to fit a 4.5 in bore cylinder.

Head cap size is determined based on the bending stress.

A static seal or o-ring is used in between the head cap and barrel (except welded construction).

The main function of the head cap is to enclose the pressure chamber at one end. The cap is connected to the cylinder body by means of welding, threading, bolts, or tie rod.

PP-45175125D has been machined to fit a 4.5 in cylinder bore and has a 1.25 in rod hole. The piston length is 1.75 in.

Piston is designed for a Polypak seal.

Matching seal kit is available.

PP-45150125A has been machined to fit a 4.5 in cylinder bore and has a 1.25 in rod hole. The piston length is 1.5 in.

Piston is designed for a Polypak seal.

Matching seal kit is available.

Designed to fit a 4.5 in inch cylinder bore and 2 in inch rod.

The gland is not threaded. It is held in place by a cylinder head cap and corresponding seal kit.