Dimensions for Non-Metallic Gaskets (including L441, Garlock, Flexible Graphite, Rubber, and Neoprene)

Ring Type

	Nominal Pipe Size (NPS)	Inside Diameter (in)	Outside Diameter (in)
Class 150	1/2	0.84	1.88
	3/4	1.06	2.25
	1	1.31	2.62
	1-1/4	1.66	3.00
	1-1/2	1.91	3.38
	2	2.38	4.12
	2-1/2	2.88	4.88
	3	3.50	5.38
	3-1/2	4.00	6.38
	4	4.50	6.88
	5	5.56	7.75
	6	6.62	8.75
	8	8.62	11.00
	10	10.75	13.38
	12	12.75	16.13
	14	14.00	17.75
	16	16.00	20.25
	18	18.00	21.62
	20	20.00	23.88
	24	24.00	28.25
Class 300	1/2	0.84	2.12
	3/4	1.06	2.62
	1	1.31	2.88
	1-1/4	1.66	3.25
	1-1/2	1.91	3.75
	2	2.38	4.38
	2-1/2	2.88	5.12
	3	3.50	5.88
	3-1/2	4.00	6.50
	4	4.50	7.12
	5	5.56	8.50
	6	6.62	9.88
	8	8.62	12.12
	10	10.75	14.25
	12	12.75	16.62
	14	14.00	19.12
	16	16.00	21.25
	18	18.00	23.50
	20	20.00	25.75
	24	24.00	30.50
Class 400	1/2	0.84	2.12
	3/4	1.06	2.62
	1	1.31	2.88
	1-1/4	1.66	3.25
	1-1/2	1.91	3.75
	2	2.38	4.38
	2-1/2	2.88	5.12
	3	3.50	5.88
	3-1/2	4.00	6.38
	4	4.50	7.00
	5	5.56	8.38
	6	6.62	9.75
	8	8.62	12.00
	10	10.75	14.12
	12	12.75	16.50
	14	14.00	19.00
	16	16.00	21.12
	18	18.00	23.38
	20	20.00	25.50
	24	24.00	30.25
Class 600	1/2	0.84	2.12
	3/4	1.06	2.62
	1	1.31	2.88
	1-1/4	1.66	3.25
	1-1/2	1.91	3.75
	2	2.38	4.38
	2-1/2	2.88	5.12
	3	3.50	5.88
	3-1/2	4.00	6.38
	4	4.50	7.62
	5	5.56	9.50
	6	6.62	10.50
	8	8.62	12.62
	10	10.75	15.75
	12	12.75	18.00
	14	14.00	19.38
	16	16.00	22.25
	18	18.00	24.12
	20	20.00	26.88
	24	24.00	31.12
Class 900	1/2	0.84	2.50
	3/4	1.06	2.75
	1	1.31	3.12
	1-1/4	3.50
	1-1/2	1.91	3.88
	2	2.38	5.62
	2-1/2	2.88	6.50
	3	3.50	6.62
	3-1/2	-	-
	4	4.50	8.12
	5	5.56	9.75
	6	6.62	11.38
	8	8.62	14.12
	10	10.75	17.12
	12	12.75	19.62
	14	14.00	20.50
	16	16.00	22.62
	18	18.00	25.12
	20	20.00	27.50
	24	24.00	33.00

Full Face

	Nominal Pipe Size (NPS)	Inside Diameter (in)	Outside Diameter (in)	No. of Bolt Holes	Bolt Hole Diameter (in)	Bolt Circle Diameter (in)
Class 150	1/2	0.84	3.50	4	0.62	2.38
	3/4	1.06	3.88	4	0.62	2.75
	1	1.31	4.25	4	0.62	3.12
	1-1/4	1.66	4.63	4	0.62	3.50
	1-1/2	1.91	5.00	4	0.62	3.88
	2	2.38	6.00	4	0.75	4.75
	2-1/2	2.88	7.00	4	0.75	5.50
	3	3.50	7.50	4	0.75	6.00
	3-1/2	4.00	8.50	8	0.75	7.00
	4	4.50	9.00	8	0.75	7.50
	5	5.56	10.00	8	0.88	8.50
	6	6.62	11.00	8	0.88	9.50
	8	8.62	13.50	8	0.88	11.75
	10	10.75	16.00	12	1.00	14.25
	12	12.75	19.00	12	1.00	17.00
	14	14.00	21.00	12	1.12	18.75
	16	16.00	23.50	16	1.12	21.25
	18	18.00	25.00	16	1.25	22.75
	20	20.00	27.50	20	1.25	25.00
	24	24.00	32.00	20	1.38	29.50
Class 300	1/2	0.84	3.75	4	0.63	2.63
	3/4	1.06	4.62	4	0.75	3.25
	1	1.31	4.88	4	0.75	3.50
	1-1/4	1.66	5.25	4	0.75	3.88
	1-1/2	1.91	6.12	4	0.88	4.50
	2	2.38	6.50	8	0.75	5.00
	2-1/2	2.88	7.50	8	0.88	5.88
	3	3.50	8.25	8	0.88	6.63
	3-1/2	4.00	9.00	8	0.88	7.25
	4	4.50	10.00	8	0.88	7.88
	5	5.56	11.00	8	0.88	9.25
	6	6.62	12.50	12	0.88	10.63
	8	8.62	15.00	12	1.00	13.00
	10	10.75	17.50	16	1.13	15.25
	12	12.75	20.50	16	1.25	17.75
	14	14.00	23.00	20	1.25	20.25
	16	16.00	25.50	20	1.38	22.50
	18	18.00	28.00	24	1.38	24.75
	20	20.00	30.50	24	1.38	27.00
	24	24.00	36.00	24	1.63	32.00
Class 400	1/2	0.84	3.75	4	0.63	2.62
	3/4	1.06	4.63	4	0.75	3.25
	1	1.31	4.88	4	0.75	3.50
	1-1/4	1.66	5.25	4	0.75	3.88
	1-1/2	1.91	6.13	4	0.88	4.50
	2	2.38	6.50	8	0.75	5.00
	2-1/2	2.88	7.50	8	0.88	5.88
	3	3.50	8.25	8	0.88	6.63
	3-1/2	4.00	9.00	8	1.00	7.25
	4	4.50	10.00	8	1.00	7.88
	5	5.56	11.00	8	1.00	9.25
	6	6.62	12.50	12	1.00	10.63
	8	8.62	15.00	12	1.13	13.00
	10	10.75	17.50	16	1.25	15.25
	12	12.75	20.50	16	1.38	17.75
	14	14.00	23.00	20	1.38	20.25
	16	16.00	25.50	20	1.50	22.50
	18	18.00	28.00	24	1.50	24.75
	20	20.00	30.50	24	1.63	27.00
	24	24.00	36.00	24	1.88	32.00
Class 600	1/2	0.84	3.75	4	0.63	2.63
	3/4	1.06	4.63	4	0.75	3.25
	1	1.31	4.88	4	0.75	3.50
	1-1/4	1.66	5.25	4	0.75	3.88
	1-1/2	1.91	6.13	4	0.88	4.50
	2	2.38	6.50	8	0.75	5.00
	2-1/2	2.88	7.50	8	0.88	5.88
	3	3.50	8.25	8	0.88	6.63
	3-1/2	4.00	9.00	8	1.00	7.25
	4	4.50	10.75	8	1.00	8.50
	5	5.56	13.00	8	1.13	10.50
	6	6.62	14.00	12	1.13	11.50
	8	8.62	16.50	12	1.25	13.75
	10	10.75	20.00	16	1.38	17.00
	12	12.75	22.00	20	1.38	19.25
	14	14.00	23.75	20	1.50	20.75
	16	16.00	27.00	20	1.63	23.75
	18	18.00	29.25	20	1.75	25.75
	20	20.00	32.00	24	1.75	28.50
	24	24.00	37.00	24	2.00	33.00
Class 900	1/2	0.84	4.75	4	0.88	3.25
	3/4	1.06	5.13	4	0.88	3.50
	1	1.31	5.88	4	1.00	4.00
	1-1/4	1.66	6.25	4	1.00	4.38
	1-1/2	1.91	7.00	4	1.13	4.88
	2	2.38	8.50	8	1.00	6.50
	2-1/2	2.88	9.63	8	1.13	7.50
	3	3.50	9.50	8	1.00	7.50
	3-1/2	4.00	11.50	-	-	-
	4	4.50	11.50	8	1.25	9.25
	5	5.56	13.75	8	1.38	11.00
	6	6.62	15.00	12	1.25	12.50
	8	8.62	18.50	12	1.50	15.50
	10	10.75	21.50	16	1.50	18.50
	12	12.75	24.00	20	1.50	21.00
	14	14.00	25.25	20	1.63	22.00
	16	16.00	27.75	20	1.75	24.25
	18	18.00	31.00	20	2.00	27.00
	20	20.00	33.75	20	2.13	29.50
	24	24.00	41.00	20	2.63	35.50