Retort Ring Without Boss Head, Ring On Rod

Retort Ring without Boss Head

Integrated Boss Head: Features a built-in heavy-duty clamp with a large thumb screw, providing a rock-solid grip on support rods without requiring additional accessories.

Corrosion-Resistant Finish: Coated with a high-quality, chemical-resistant finish (typically powder-coated or chrome-plated) to prevent rust and degradation from acid or solvent splashes.

₹200.00

Quick Answer: The Retort Ring without Boss Head is a metal ring at the end of a straight rod, with no fixing of its own; a separate boss head clamps the rod to the retort stand. The listing photograph shows a bright ring on a long, plain rod.

Why Leave the Boss Head Off

A retort ring without boss head is the modular version of a support ring. The rod passes into one slot of a boss head and the stand upright into the other, so the ring can be pushed further out or drawn closer to the stand by sliding the rod, not just moved up and down. That extra adjustment helps when the ring has to reach over a heating mantle, a hot plate or a water bath that stops the stand from being placed close to the work.

It also means one boss head can serve several items. A teacher with a tray of rings, rods and clamps can build a filtration stand, then swap the ring for a burette clamp, without buying a ring with its own connector for every stand. The trade-off is one more part to find and tighten, and a ring that can rotate on its rod if the boss head screw is left slack.

Rods of this type fit a standard boss head or a rectangular Euro boss head; check that the rod diameter falls within the slot range of the boss heads you already have. The ring’s inside diameter is not stated in the title.

Applications

Holding a filter funnel far out from the stand so it clears a wide receiving beaker
Carrying a gauze over a burner placed on a heat-resistant mat beside the stand base
Supporting the bowl of a large separating funnel, with a clamp above at the neck
Building temporary set-ups from a shared kit of rods, boss heads and rings in a practical class

Specifications

Type	Support ring on a straight rod, no connector
Ring	Bright metal ring at one end of the rod (as pictured)
Fixing	Needs a separate boss head
Adjustment	Height on the stand, and reach along the rod
Pairs with	Standard or Euro boss heads on a retort stand
Ring diameter and rod length	Confirm at enquiry

Care & Handling

Tighten the boss head screw on the ring’s rod as well as on the stand; a ring that can turn on its rod will tip a funnel or basin sideways.
Keep heavy loads close to the stand rather than at full reach, since the rod acts as a lever on the boss head.
Store rings flat, or hang them by the ring, so the rods stay straight.

Why Choose LabEquip

Teaching labs that assemble apparatus from shared kits of stand parts get the most flexibility from separate rings and boss heads. LabEquip stocks both in its General Lab Products range; give the rod diameter of your boss heads through the contact page when you enquire.

Frequently Asked Questions

Do I need a boss head to use this retort ring?

Yes. The rod has no fixing of its own, so it needs a boss head, with one slot on the ring’s rod and the other on the stand upright.

What is the advantage over a ring with an attached boss head?

You can change the reach as well as the height by sliding the rod through the boss head, and one boss head can be moved between rings and clamps. The cost is an extra part to tighten.

Can the ring be set at an angle?

It can be turned on its rod before the boss head screw is tightened, but a tilted ring will not hold a gauze or funnel level. For most uses keep the ring horizontal.

How far out can I extend the ring?

Only as far as the load and the stand allow. The longer the reach, the greater the turning force on the boss head and the base, so keep heavy items close to the upright.

Will this rod fit my existing boss heads?

It will if the rod diameter is within the slot range of your boss heads. Measure one rod and one slot, and give both figures when you order in quantity.

How do I stop the ring rotating under a load?

Tighten the boss head screw firmly by hand on the rod, keep the ring level and place the load centrally, so its weight does not twist the rod in the slot.

Last Updated: September 2026