Standard and Custom Rubber Grommets

For over 70 years, Hawthorne Rubber Manufacturing Corporation has been a supplier of both standard and precision custom-molded rubber grommets to the exact specifications of OEM, industrial, laboratory, and engineering development groups. We mold custom rubber grommets in many different materials in a wide range of durometer hardnesses.

Standard Nitrile Grommets

This list of standard grommets sizes has been developed and organized into an easy-to-use lookup source sorted by groove width D, then A, B, C, and E. A complete chart listing of the MS35489 sizes is also available. The Request for Quote form can be used to inform us of what your grommet needs are. We also have a toll-free FAX number, 800-643-2580, that can be used to send us your blueprint drawings and requests for quotation.

MS35489 Military Standard Grommets

The grommets listed in the following table are standard Army-Navy grommets with a BN-50 material identification and meet MIL-G-3036 and MS35489 specifications. They are made from black Buna-N rubber. Shore A durometer hardness of 50. The temperature range is -45°F to 250°F.

Note: Scroll right to preview data

P/N	A	B	C	D	E	A	B	C	D	E
G-001 BN-50	1/8	1/4	11/32	1/16	3/16	0.125	0.25	0.344	0.063	0.188
G-002 BN-50	1/8	9/16	3/4	1/16	3/16	0.125	0.563	0.75	0.063	0.188
G-004 BN-50	3/16	5/16	7/16	1/16	3/16	0.188	0.313	0.438	0.063	0.188
G-134 BN-50	3/16	9/16	3/4	1/16	3/16	0.188	0.563	0.75	0.063	0.188
G-005 BN-50	3/16	5/8	7/8	1/16	3/16	0.188	0.625	0.875	0.063	0.188
G-006 BN-50	1/4	7/16	5/8	1/16	3/16	0.25	0.438	0.625	0.063	0.188
G-007 BN-50	1/4	3/4	1	1/16	1/4	0.25	0.75	1	0.063	0.25
G-008 BN-50	1/4	1	1 1/4	1/16	1/4	0.25	1	1.25	0.063	0.25
G-009 BN-50	5/16	9/16	13/16	1/16	5/16	0.313	0.563	0.813	0.063	0.313
G-118 BN-50	5/16	13/16	1 1/9	1/16	5/16	0.313	0.813	1.063	0.063	0.313
G-010 BN-50	5/16	3/4	1	1/16	5/16	0.313	0.75	1	0.063	0.313
G-930-1 BN-50	3/8	1/2	11/16	1/16	9/32	0.375	0.5	0.688	0.063	0.281
G-930-2 BN-50	3/8	9/16	3/4	1/16	3/8	0.375	0.563	0.75	0.063	0.375
G-011 BN-50	3/8	5/8	7/8	1/16	5/16	0.375	0.625	0.875	0.063	0.313
G-012 BN-50	3/8	1	1 1/4	1/16	1/4	0.375	1	1.25	0.063	0.25
G-013 BN-50	7/16	11/16	15/16	1/16	5/16	0.438	0.688	0.938	0.063	0.313
G-014 BN-50	1/2	13/16	1 1/9	1/16	5/16	0.5	0.813	1.063	0.063	0.313
G-015 BN-50	1/2	1 1/4	1 1/2	1/16	1/4	0.5	1.25	1.5	0.063	0.25
G-016 BN-50	9/16	13/16	1 1/9	1/16	5/16	0.563	0.813	1.063	0.063	0.313
G-017 BN-50	5/8	7/8	1 1/8	1/16	5/16	0.625	0.875	1.125	0.063	0.313
G-018 BN-50	5/8	1 1/4	1 1/2	1/16	1/4	0.625	1.25	1.5	0.063	0.25
G-020 BN-50	3/4	1 1/9	1 3/8	1/16	3/8	0.75	1.063	1.375	0.063	0.375
G-135 BN-50	3/4	1 1/4	1 5/8	1/16	1/4	0.75	1.25	1.625	0.063	0.25
G-021 BN-50	3/4	1 4/9	1 13/16	1/16	3/8	0.75	1.438	1.813	0.063	0.375
G-120 BN-50	3/4	1 5/8	2	1/16	3/8	0.75	1.625	2	0.063	0.375
G-022 BN-50	7/8	1 1/4	1 5/8	1/16	7/16	0.875	1.25	1.625	0.063	0.438
G-023 BN-50	1	1 3/8	1 3/4	1/16	7/16	1	1.375	1.75	0.063	0.438
G-027 BN-50	1 1/2	1 3/4	2 1/8	1/16	7/16	1.5	1.75	2.125	0.063	0.438
G-150 BN-50	1/2	3/4	1	3/32	9/32	0.5	0.75	1	0.094	0.281
G-033 BN-50	3/16	5/16	7/16	1/8	1/4	0.188	0.313	0.438	0.125	0.25
G-035 BN-50	1/4	7/16	5/8	1/8	1/4	0.25	0.438	0.625	0.125	0.25
G-038 BN-50	5/16	9/16	13/16	1/8	3/8	0.313	0.563	0.813	0.125	0.375
G-039 BN-50	5/16	3/4	1	1/8	3/8	0.313	0.75	1	0.125	0.375
G-040 BN-50	3/8	5/8	7/8	1/8	3/8	0.375	0.625	0.875	0.125	0.375
G-043 BN-50	1/2	13/16	1 1/9	1/8	3/8	0.5	0.813	1.063	0.125	0.375
G-046 BN-50	5/8	7/8	1 1/8	1/8	3/8	0.625	0.875	1.125	0.125	0.375
G-048 BN-50	11/16	1	1 1/3	1/8	7/16	0.688	1	1.313	0.125	0.438
G-049 BN-50	3/4	1 1/9	1 3/8	1/8	7/16	0.75	1.063	1.375	0.125	0.438
G-051 BN-50	7/8	1 1/4	1 5/8	1/8	1/2	0.875	1.25	1.625	0.125	0.5
G-052 BN-50	1	1 3/8	1 3/4	1/8	1/2	1	1.375	1.75	0.125	0.5
G-056 BN-50	1 1/2	1 3/4	2 1/8	1/8	1/2	1.5	1.75	2.125	0.125	0.5
G-063 BN-50	3/16	5/8	7/8	3/16	5/16	0.188	0.625	0.875	0.188	0.313
G-064 BN-50	1/4	7/16	5/8	3/16	5/16	0.25	0.438	0.625	0.188	0.313
G-067 BN-50	5/16	9/16	13/16	3/16	7/16	0.313	0.563	0.813	0.188	0.438
G-068 BN-50	5/16	3/4	1	3/16	7/16	0.313	0.75	1	0.188	0.438
G-069 BN-50	3/8	5/8	7/8	3/16	7/16	0.375	0.625	0.875	0.188	0.438
G-072 BN-50	1/2	13/16	1 1/9	3/16	7/16	0.5	0.813	1.063	0.188	0.438
G-075 BN-50	5/8	7/8	1 1/8	3/16	7/16	0.625	0.875	1.125	0.188	0.438
G-077 BN-50	11/16	1	1 1/3	3/16	1/2	0.688	1	1.313	0.188	0.5
G-080 BN-50	7/8	1 1/4	1 5/8	3/16	9/16	0.875	1.25	1.625	0.188	0.563
G-091 BN-50	3/16	5/16	7/16	1/4	3/8	0.188	0.313	0.438	0.25	0.375
G-093 BN-50	1/4	7/16	5/8	1/4	3/8	0.25	0.438	0.625	0.25	0.375
G-096 BN-50	5/16	9/16	13/16	1/4	1/2	0.313	0.563	0.813	0.25	0.5
G-097 BN-50	5/16	3/4	1	1/4	1/2	0.313	0.75	1	0.25	0.5
G-101 BN-50	1/2	13/16	1 1/9	1/4	1/2	0.5	0.813	1.063	0.25	0.5
G-104 BN-50	5/8	7/8	1 1/8	1/4	1/2	0.625	0.875	1.125	0.25	0.5
G-106 BN-50	11/16	1	1 1/3	1/4	9/16	0.688	1	1.313	0.25	0.563
G-107 BN-50	3/4	1 1/9	1 3/8	1/4	9/16	0.75	1.063	1.375	0.25	0.563
G-133 BN-50	7/8	1 5/8	2	1/4	5/8	0.875	1.625	2	0.25	0.625
G-930-3 BN-50	3/8	9/16	3/4	3/8	3/4	0.375	0.563	0.75	0.375	0.75

In-House Standard MIL-G-3036 Nitrile Grommets

The grommets listed in the following table are standard grommets that have a BN-50 material identification and meet MIL-G-3036 material specifications. They are made from black Buna-N rubber. Shore A durometer hardness of 50. Temperature range is -45°F to 250°F. (Grommets molded with the MIL-G-3036 Silicone rubber are also available.)

Complete chart of the MS35489 sizes

Note: Scroll right to preview data

P/N	A	B	C	D	E	A	B	C	D	E
G-K61 BN-50	1 1/4	1 1/2	1 7/8	1/16	11/32	1.25	1.5	1.875	0.063	0.344
G-H001 BN-50	3/16	5/16	35/64	5/64	13/64	0.188	0.312	0.547	0.078	0.203
G-B0001 BN-50	3/8	1 7/16	1 13/16	3/16	1/2	0.375	1.438	1.812	0.188	0.5

Standard SBR Grommets

This list of standard grommets sizes has been developed and organized into an easy-to-use lookup source sorted by groove width D, then A, B, C, and E.

Standard Styrene Butadiene Rubber Grommets:

The grommets listed in the following table are made from a black SBR (styrene-butadiene rubber) compound. The hardness is 55 Shore A durometer. Temperature range of -35°F to 180°F.

Complete chart of the MS35489 sizes

Note: Scroll right to preview data

P/N	A	B	C	D	E	A	B	C	D	E
G-K14 SR-55	1/4	11/32	1/2	1/32	5/32	0.25	0.344	0.5	0.031	0.156
G-K17 SR-55	1/8	3/16	11/32	1/16	7/32	0.125	0.188	0.344	0.063	0.219
G-K11 SR-55	1/8	1/4	11/32	1/16	7/32	0.125	0.25	0.344	0.063	0.219
G-K41 SR-55	5/32	3/8	1/2	1/16	7/32	0.156	0.375	0.5	0.063	0.219
G-K27 SR-55	5/32	1/2	11/16	1/16	9/32	0.156	0.5	0.688	0.063	0.281
G-K13 SR-55	3/16	5/16	13/32	1/16	7/32	0.188	0.313	0.406	0.063	0.219
G-K39 SR-55	3/16	5/16	1/2	1/16	1/4	0.188	0.313	0.5	0.063	0.25
G-K24 SR-55	1/4	11/32	1/2	1/16	3/16	0.25	0.344	0.5	0.063	0.188
G-K25 SR-55	1/4	3/8	1/2	1/16	3/16	0.25	0.375	0.5	0.063	0.188
G-K28 SR-55	1/4	3/8	5/8	1/16	11/32	0.25	0.375	0.625	0.063	0.344
G-K42 SR-55	9/32	3/8	19/32	1/16	13/64	0.281	0.375	0.594	0.063	0.203
G-K15 SR-55	9/32	3/8	9/16	1/16	1/4	0.281	0.375	0.563	0.063	0.25
G-K16 SR-55	9/32	7/16	5/8	1/16	1/4	0.281	0.438	0.625	0.063	0.25
G-K31 SR-55	5/16	1/2	5/8	1/16	1/4	0.313	0.5	0.625	0.063	0.25
G-K46 SR-55	3/8	5/8	7/8	1/16	11/32	0.375	0.625	0.875	0.063	0.344
G-K18 SR-55	13/32	1/2	11/16	1/16	1/4	0.406	0.5	0.688	0.063	0.25
G-K19 SR-55	27/64	9/16	3/4	1/16	1/4	0.422	0.563	0.75	0.063	0.25
G-K21 SR-55	9/16	3/4	1	1/16	5/16	0.563	0.75	1	0.063	0.313
G-017 SR-55	5/8	7/8	1 1/8	1/16	5/16	0.625	0.875	1.125	0.063	0.313
G-K57 SR-55	3/4	1 3/32	1 5/8	1/16	5/16	0.75	1.094	1.625	0.063	0.313
G-K58 SR-55	7/8	1 1/4	1 5/8	1/16	7/16	0.875	1.25	1.625	0.063	0.438
G-K61 SR-55	1 1/4	1 1/2	1 7/8	1/16	11/32	1.25	1.5	1.875	0.063	0.344
G-K55 SR-55	11/16	1	1 5/16	5/64	3/8	0.688	1	1.313	0.078	0.375
G-K38 SR-55	3/16	9/32	13/32	3/32	5/16	0.188	0.281	0.406	0.094	0.313
G-K23 SR-55	3/16	5/16	1/2	3/32	9/32	0.188	0.313	0.5	0.094	0.281
G-K48 SR-55	9/32	7/8	1 1/8	3/32	11/32	0.281	0.875	1.125	0.094	0.344
G-K33 SR-55	3/8	7/16	5/8	3/32	9/32	0.375	0.438	0.625	0.094	0.281
G-K34 SR-55	3/8	1/2	13/16	3/32	3/8	0.375	0.5	0.813	0.094	0.375
G-150 SR-55	1/2	3/4	1	3/32	9/32	0.5	0.75	1	0.094	0.281
G-K56 SR-55	23/32	1 1/16	1 9/32	3/32	3/8	0.719	1.063	1.281	0.094	0.375
G-K49 SR-55	3/4	1 1/8	1 1/2	3/32	5/16	0.75	1.125	1.5	0.094	0.313
G-K59 SR-55	1	1 3/8	1 3/4	3/32	3/8	1	1.375	1.75	0.094	0.375
G-K52 SR-55	1 1/4	1 1/2	1 7/8	3/32	3/8	1.25	1.5	1.875	0.094	0.375
G-K62 SR-55	1 1/4	1 3/4	2 1/8	3/32	3/8	1.25	1.75	2.125	0.094	0.375
G-K63 SR-55	1 1/2	2	2 3/8	3/32	3/8	1.5	2	2.375	0.094	0.375
G-K51 SR-55	1	1 3/8	1 3/4	7/64	13/32	1	1.375	1.75	0.109	0.406
G-K45 SR-55	3/16	7/16	9/16	1/8	3/8	0.188	0.438	0.563	0.125	0.375
G-K26 SR-55	17/64	13/32	5/8	1/8	3/8	0.266	0.406	0.625	0.125	0.375
G-K47 SR-55	3/8	5/8	7/8	1/8	13/32	0.375	0.625	0.875	0.125	0.406
G-046 SR-55	5/8	7/8	1 1/8	1/8	3/8	0.625	0.875	1.125	0.125	0.375
G-K54 SR-55	5/16	1/2	11/16	1/4	7/16	0.313	0.5	0.688	0.25	0.438
G-133 SR-55	7/8	1 5/8	2	1/4	5/8	0.875	1.625	2	0.25	0.625

Note: Scroll right to preview data

P/N	A	B	C	D	E	A	B	C	D	E
G-K43 SR-55s	1/4	3/8	9/16	3/64	19/64	0.25	0.375	0.563	0.047	0.297
G-K44 SR-55	1/4	7/16	9/16	1/16	5/16	0.25	0.438	0.563	0.063	0.313
G-K53 SR-55	5/16	1/2	3/4	1/8	3/8	0.313	0.5	0.75	0.125	0.375
G-K32 SR-55	3/8	1/2	5/8	1/16	1/4	0.375	0.5	0.625	0.063	0.25
G-K35 SR-55	13/32	9/16	13/16	1/16	5/16	0.406	0.563	0.813	0.063	0.313

Note: Scroll right to preview data

P/N	A	B	C	D	E	A	B	C	D	E
G-K66 SR-55	5/32	1/4	21/64	7/64	13/64	0.156	0.25	0.328	0.109	0.203
G-K67 SR-55	9/32	3/8	5/8	5/32	11/32	0.281	0.375	0.625	0.156	0.344

Note: Scroll right to preview data

P/N	A	B	C	D	E	F	A	B	C	D	E	F
G-K64 SR-55	3/16	5/16	5/8	1/16	7/32	7/16	0.188	0.313	0.625	0.063	0.219	0.438
G-K65 SR-55	3/8	11/16	1	9/64	13/32	7/8	0.375	0.688	1	0.141	0.406	0.875

Grommet Request for Quote Form

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The balance of the information is to be entered if it applies to your request.

Thank you for your inquiry. We look forward to supplying your future rubber product requirements.