Silicone Rubber Belts | McMaster-Carr

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Outer Circle

Pitch

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Belt Trade Size

Belt Trade Number

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Tooth Location

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Reinforcement Material

Aramid

Minimum Temperature

-49° F to -25° F

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Belt Type

REACH

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DFARS Specialty Metals

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64 Products

Timing Belts

Keep your drive system in sync. Trapezoidal teeth mesh with matching pulleys to transmit power without slipping. With the original tooth profile, these timing belts handle enough torque and synchronization for most applications. If you need high torque or precise starts and stops, consider curved tooth profiles, such as GT and HTD belts.

High-Temperature Silicone Rubber—The best for extreme heat, silicone timing belts resist sterilizing temperatures that would degrade other rubber. All are reinforced with aramid for very high strength and low stretch.

	Wd.	Outer Circle	No. of Teeth	Pitch	Reinforcement Material	Temp. Range, ° F	Belt Trade No.		Each
High-Temperature Silicone Rubber







				XL Trade Size

				1/4"	9"	45	0.200"	Aramid	-40 to 400	90XL025	51514T111	000000


				1/4"	10"	50	0.200"	Aramid	-40 to 400	100XL025	51514T112	00000
				1/4"	11"	55	0.200"	Aramid	-40 to 400	110XL025	51514T113	00000
				1/4"	12"	60	0.200"	Aramid	-40 to 400	120XL025	51514T114	00000
				1/4"	13"	65	0.200"	Aramid	-40 to 400	130XL025	51514T115	00000
				1/4"	14"	70	0.200"	Aramid	-40 to 400	140XL025	51514T116	00000
				1/4"	15"	75	0.200"	Aramid	-40 to 400	150XL025	51514T117	00000
				1/4"	16"	80	0.200"	Aramid	-40 to 400	160XL025	51514T118	00000
				1/4"	16.8"	84	0.200"	Aramid	-40 to 400	168XL025	51514T119	00000
				1/4"	18"	90	0.200"	Aramid	-40 to 400	180XL025	51514T121	00000
				1/4"	19"	95	0.200"	Aramid	-40 to 400	190XL025	51514T122	00000


				1/4"	21"	105	0.200"	Aramid	-40 to 400	210XL025	51514T123	00000
				1/4"	24"	120	0.200"	Aramid	-40 to 400	240XL025	51514T124	00000
				1/4"	28"	140	0.200"	Aramid	-40 to 400	280XL025	51514T125	00000
				3/8"	9"	45	0.200"	Aramid	-40 to 400	90XL037	51514T311	00000
				3/8"	10"	50	0.200"	Aramid	-40 to 400	100XL037	51514T312	00000
				3/8"	11"	55	0.200"	Aramid	-40 to 400	110XL037	51514T313	00000
				3/8"	12"	60	0.200"	Aramid	-40 to 400	120XL037	51514T314	00000
				3/8"	13"	65	0.200"	Aramid	-40 to 400	130XL037	51514T315	00000
				3/8"	14"	70	0.200"	Aramid	-40 to 400	140XL037	51514T316	00000
				3/8"	15"	75	0.200"	Aramid	-40 to 400	150XL037	51514T317	00000


				3/8"	16"	80	0.200"	Aramid	-40 to 400	160XL037	51514T318	00000
				3/8"	16.8"	84	0.200"	Aramid	-40 to 400	168XL037	51514T319	00000
				3/8"	18"	90	0.200"	Aramid	-40 to 400	180XL037	51514T321	00000
				3/8"	19"	95	0.200"	Aramid	-40 to 400	190XL037	51514T322	00000
				3/8"	21"	105	0.200"	Aramid	-40 to 400	210XL037	51514T323	00000
				3/8"	24"	120	0.200"	Aramid	-40 to 400	240XL037	51514T324	00000
				3/8"	28"	140	0.200"	Aramid	-40 to 400	280XL037	51514T325	00000
				1/2"	9"	45	0.200"	Aramid	-40 to 400	90XL050	51514T511	00000
				1/2"	10"	50	0.200"	Aramid	-40 to 400	100XL050	51514T512	00000
				1/2"	11"	55	0.200"	Aramid	-40 to 400	110XL050	51514T513	00000


				1/2"	12"	60	0.200"	Aramid	-40 to 400	120XL050	51514T514	00000
				1/2"	13"	65	0.200"	Aramid	-40 to 400	130XL050	51514T515	00000
				1/2"	14"	70	0.200"	Aramid	-40 to 400	140XL050	51514T516	00000
				1/2"	15"	75	0.200"	Aramid	-40 to 400	150XL050	51514T517	00000
				1/2"	16"	80	0.200"	Aramid	-40 to 400	160XL050	51514T518	00000
				1/2"	16.8"	84	0.200"	Aramid	-40 to 400	168XL050	51514T519	00000
				1/2"	18"	90	0.200"	Aramid	-40 to 400	180XL050	51514T521	00000
				1/2"	19"	95	0.200"	Aramid	-40 to 400	190XL050	51514T522	00000
				1/2"	21"	105	0.200"	Aramid	-40 to 400	210XL050	51514T523	00000
				1/2"	24"	120	0.200"	Aramid	-40 to 400	240XL050	51514T524	00000


				1/2"	28"	140	0.200"	Aramid	-40 to 400	280XL050	51514T525	00000




	L Trade Size

	3/4"				16.5"	44	0.375"	Aramid	-40 to 400	165L075	51514T411	00000


	3/4"	18.7"			50	0.375"	Aramid	-40 to 400	187L075	51514T412	00000
	3/4"	34.5"	92		0.375"	Aramid	-40 to 400	345L075	51514T413	000000
	3/4"	39"	104		0.375"	Aramid	-40 to 400	390L075	51514T414	000000
	3/4"	42"	112		0.375"	Aramid	-40 to 400	420L075	51514T416	000000
	1"	16.5"	44		0.375"	Aramid	-40 to 400	165L100	51514T611	000000
	1"	18.7"	50		0.375"	Aramid	-40 to 400	187L100	51514T612	000000
	1"	34.5"	92		0.375"	Aramid	-40 to 400	345L100	51514T613	000000
	1"	39"	104		0.375"	Aramid	-40 to 400	390L100	51514T614	000000
	1"	42"	112		0.375"	Aramid	-40 to 400	420L100	51514T616	000000




			H Trade Size

			1"		16.5"	33	0.500"	Aramid	-40 to 400	165H100	51514T811	000000


			1"		17.5"	35	0.500"	Aramid	-40 to 400	175H100	51514T812	000000
			1"		21"	42	0.500"	Aramid	-40 to 400	210H100	51514T813	000000
			1"		22.5"	45	0.500"	Aramid	-40 to 400	225H100	51514T814	000000
			1"		39"	78	0.500"	Aramid	-40 to 400	390H100	51514T815	000000
			1"		42"	84	0.500"	Aramid	-40 to 400	420H100	51514T816	000000
			1 1/2"		16.5"	33	0.500"	Aramid	-40 to 400	165H150	51514T911	000000
			1 1/2"		17.5"	35	0.500"	Aramid	-40 to 400	175H150	51514T912	000000
			1 1/2"		21"	42	0.500"	Aramid	-40 to 400	210H150	51514T913	000000
			1 1/2"		22.5"	45	0.500"	Aramid	-40 to 400	225H150	51514T914	000000
			1 1/2"		39"	78	0.500"	Aramid	-40 to 400	390H150	51514T915	000000


			1 1/2"		42"	84	0.500"	Aramid	-40 to 400	420H150	51514T916	000000