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Plastic Pails & Drums <br /> COMPOSITE DRUMS <br /> 1 . All non - removable head , UN 6HA1 , Composite drums , 49 CFR § 178 . 522 ( a ) ( 1 ) , 55 gallon nominal <br /> capacity supplied with plug or screw cap closures with gaskets must be closed for shipment <br /> using only the closures and gaskets supplied and specified in the design qualification test for the <br /> drum as indicated below : <br /> Part Size / Part Number ( Plug number with gasket) Torque <br /> a HDPE Liner 6HA1 /X1 . 8/350 and X1 . 8/300 : 2 inch double buttress L- 29 ftAbs . <br /> 10xx with L11 EP -xx <br /> b Liner 5506 : 24ch NPS : L16-xx with L12 -xx 14 . 5 ft . - lbs . <br /> c Liner 5506 : 3/4 inch NPS : C39-xx 4 . 5 ftAbs . <br /> d HDPE Liner 6HA1 /Y1 . 8/ 100 : 24ch double buttress : L10 - xx with 21 ftAbs . <br /> L11 EP -xx <br /> e LDPE Liner 6HA1 /Y1 . 8/ 100 and Y2 . 0/ 100 : 2 - inch combination plug : 14 . 5 ftAbs . <br /> A16 EP &TR <br /> f LDPE Liner 6HA1 /Y1 . 8/ 100 and Y2 . 0/ 100 : 3/4 inch NPS : C34TR with 4 . 5 ftAbs . <br /> C31 EP -TR gasket <br /> g Liner 5510 : 2- inch double buttress : L10- HD with L11 - 134F 25 Abs .ft <br /> (dote : Mauser uses various buttress and NPS plugs under the generic part numbers L10 and AM respectively. <br /> They are supplied with the drum with gasket- installed ready for final closing for shipment . The plug and gasket are <br /> specific to the drum as tested . Likewise the screw caps are supplied with gasket as tested . The closures must be <br /> properly installed and tightened to the torque shown or specified on the particular closing instructions for the drum <br /> supplied . Closures must be tightened to recommended torque using pre -set or variable- range machinist torque <br /> wrenches calibrated to the indicated value . <br /> 4 <br />