Plugs for Machine Oil | McMaster-Carr

Plug leaky internal tubes in heat exchangers with these two-piece ring and pin sets. Insert the ring into the tube and hammer the pin into the ring for a secure seal. If you do not know the tube OD or wall thickness, measure the tube ID and select the closest ring OD.

	For Tube Wall Thk.	Temp. Range, ° F	Includes		Each
For 1/2" OD Tubes



	0.37"	0.065"	-30 to 1,200	One Pin, One Ring	3507K112	000000


	0.39"	0.058"	-30 to 1,200	One Pin, One Ring	3507K113	00000
	0.4"	0.049"	-30 to 1,200	One Pin, One Ring	3507K111	00000
	0.41"	0.042"	-30 to 1,200	One Pin, One Ring	3507K114	00000
	0.43"	0.035"	-30 to 1,200	One Pin, One Ring	3507K115	00000


	For 5/8" OD Tubes



			0.46"	0.083"	-40 to 500	One Pin, One Ring	3507K713	00000


			0.49"	0.072"	-40 to 500	One Pin, One Ring	3507K711	00000
			0.5"	0.065"	-40 to 500	One Pin, One Ring	3507K522	00000
			0.51"	0.058"	-40 to 500	One Pin, One Ring	3507K523	00000
			0.53"	0.049"	-40 to 500	One Pin, One Ring	3507K521	00000
			0.55"	0.042"	-40 to 500	One Pin, One Ring	3507K524	00000
			0.57"	0.035"	-40 to 500	One Pin, One Ring	3507K525	00000


			For 3/4" OD Tubes



					0.59"	0.083"	-40 to 500	One Pin, One Ring	3507K556	00000


					0.61"	0.072"	-40 to 500	One Pin, One Ring	3507K557	00000
					0.63"	0.065"	-40 to 500	One Pin, One Ring	3507K552	00000
					0.64"	0.058"	-40 to 500	One Pin, One Ring	3507K558	00000
					0.66"	0.049"	-40 to 500	One Pin, One Ring	3507K551	00000

Screw-Plug Immersion Heating Elements for Oil and Coolant


Without Temperature Control —Incoloy Heating Element	With Adjustable Thermostat—Incoloy Heating Element

To heat oil and coolant without creating hot spots and damaging the heating element, these heating elements have a lower watt density than heating elements for water or chemicals. They install into threaded container openings or pipe couplings to quickly and efficiently heat liquid through direct contact.

Note: Fully immerse the heating element in liquid to prevent heating element failure. These heating elements install through threaded container openings or pipe couplings.

Incoloy Nickel Heating Element—Incoloy heating elements are more corrosion resistant than steel heating elements.

Without Temperature Control—Heating elements without temperature control require a temperature switch or controller (sold separately) to regulate heat output.

Adjustable Thermostat—Heating elements with an adjustable thermostat automatically turn on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the dial.

			Heating Element											Without Temperature Control			Adjustable Thermostat (60° F to 250° F)
	Wattage, W	Watt Density, W/in²	Lg.	Wd.	No. of	Pipe Size	Thread Type	Gender	Electrical Connection Type	Wire Connection	Enclosure Rating	Certification	For Use With	Current, amp		Each	Current, amp	Temp. Control Method		Each
Incoloy Nickel Heating Element with 304 Stainless Steel Body







				120V AC, Single Phase

				475	22	12 9/16"	15/16"	1	1	NPT	Male	Hardwire	Screw Terminal	NEMA 1	CE Marked CSA Certified UL Recognized Component	Ethylene Glycol Hydraulic Oil Machine Oil Motor Oil Propylene Glycol Water	4	3656K204	0000000	—	—	———	0


				475	22	12 9/16"	15/16"	3	1	NPT	Male	Hardwire	Screw Terminal	NEMA 1	CE Marked CSA Certified UL Recognized Component	Ethylene Glycol Hydraulic Oil Machine Oil Motor Oil Propylene Glycol Water	—	———	0	4	Dial	3656K211	0000000
				1,100	21	28 7/16"	15/16"	1	1	NPT	Male	Hardwire	Screw Terminal	NEMA 1	CE Marked CSA Certified UL Recognized Component	Ethylene Glycol Hydraulic Oil Machine Oil Motor Oil Propylene Glycol Water	9.2	3656K205	000000	9.2	Dial	3656K212	000000
				1,325	20	34 7/8"	15/16"	1	1	NPT	Male	Hardwire	Screw Terminal	NEMA 1	CE Marked CSA Certified UL Recognized Component	Ethylene Glycol Hydraulic Oil Machine Oil Motor Oil Propylene Glycol Water	11	3656K206	000000	11	Dial	3656K213	000000

Replacement Thermostats