ASTJ- Custom Length

NOTICE: Currently, all available inventory of this product has been depleted and delivery of cylinder stock for production is pending and we have no estimate for availability at this time. With the ongoing impact of the Covid-19 situation we are seeing increased disruption of material availability and shipment scheduling which may alter status at any time. We will update the status of inventory and availability for this product when informed of any changes.  At this time, there is no “waiting list” option for this item and ask that you check this page occasionally for updated status.

Our popular Acrylic STJ Cylinder, but finished to an internal length of your choice shorter than the standard 9” finish. Forming is precise, cap joints are flawless; it's a TOTALLY professional product designed for big volume pumpers. Constructed from premium quality thick-wall (1/4" thick!) Cell-Cast Acrylic plastic. It's a two-stage body design (5" I.D. tapering smoothly to 4" at the entry) that becomes a three-stage (necking to 2-3/4") with the soft STJ seal! Actual entry/exit size is 4", because you exit the cylinder first, then remove the seal. The seal is elastic and stretches over the pumped package.

The standard glass STJ has been a popular and inexpensive entry-level cylinder option. While the glass STJ is quite effective, and quite tough as glass goes- there is always a risk because glass can break. That brings the risk of injury, and the more you pump, the greater the exposure. We highly recommend that you don't expose yourself to that risk!

Features of the ASTJ Cylinder:

• Laser engraved dimension scale in both inch and metric markings!!
• Includes PumpToys' famous STJ Precision Seal.
• Optional upgrade to the STJS Silicone Precision Seal!
• This is a fast-pumping cylinder; helps you build rapidly.
• High mobility- you can walk around with this cylinder on!
• Optically clear cast acrylic sidewalls, 1/4" thick.
• Clear acrylic dome cap, 3/8" thick!
• Comes with industry-standard SDB.18 quick disconnect coupler installed.
• Coupler is now offset to the top edge for easy access and wet pumping!