Uline Stainless Steel Drums

Closure Instructions

Bolt Ring Closure for Open Head Drums

1. CHECK GASKET – to ensure cover gasket is properly fitted into cover groove. (Refer to diagram showing a threaded lug and a diagram showing an unthreaded lug).
2. PLACE COVER ON DRUM - being careful to properly seat gasket all around curl.
3. POSITION & SEAT RING – with lugs downward. Ensure the inner channel of the closure ring engages entire drum curl and cover. Apply downward pressure on cover. Use a non-sparking dead-blow mallet to further seat cover and drum curl into the inner channel of the ring. (Diagram shows ring engaging drum and cover).
4. INSERT BOLT – through the unthreaded lug of the ring. Assemble the locking hex nut onto the threaded end of the bolt and tighten into the threaded lug. Close the ring to an initial gap of about 1/2 inch (1.3 cm). (Diagram shows bolt and locking nut).
5. TIGHTEN THE BOLT – with a calibrated torque wrench while using downward pressure on the cover and hammering the outside of the ring with a non-sparking dead-blow mallet to further seat the ring. Continue tightening and hammering the ring until the torque stabilizes at 55 - 60 ft-lbs (74.6 - 81.3 N.m) and does not decrease when further hammering on the ring circumference is performed. Ring ends must not touch. (Diagram indicates ring ends must not touch). (Effective 25 September, 2006 and in accordance with CFR 178.2(c), torque is the most effective closure requirement.)
6. LOCK RING – by tightening the nut against the unthreaded lug. (Diagram shows locking nut against unthreaded lug).

Drums with Fittings

1. CHECK GASKETS – and ensure gasket is properly seated on plug.
2. TIGHTEN - to specifications listed in the table, and do not cross thread.

Important Information

Drums with Fittings

• Closure Instructions Rev. D are valid for closing all product tested with and/or manufactured under Closure Instructions Rev C. & Rev. B. Revisions are clerical and do not affect the actual closing of product.
• A drum is properly closed only when all steps are completed in the manner and sequence indicated. If difficulties are encountered, do not ship the drum; call Uline for further instruction.
• Under applicable DOT regulations, any changes made to the method of closure or closure components constitute a change in the design type of this packaging and invalidate the certification.
• After filling and prior to transport, the shipper should verify the torque of all closures to determine if the effects of heating and cooling or gasket relaxation have resulted in the need to re-tighten the closure.
• Drums (other than the composites) are tested at room temperature.