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Neoprene Ring Gasket

Ring gaskets are a flat sealing element, consisting of an inner and outer diameter sized to fit a flange's bore and bolt circle. Ring gaskets sit inside the flange's bolt circle. ASME B16.21 and ASME B16.47 govern the dimensions of ring gaskets for standard and large diameter pipe flanges. Neoprene offers good resistance to oil and petroleum base solvents and excellent resistance to dilute acids. Known by the chemical name chloroprene, 60 durometer neoprene is made from 100% neoprene and is suited for various applications while giving users a gasket material with excellent weathering and ozone resistance.

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Governing Standards
Physical Properties
Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsNeoprene Ring Gasket

Per ASME B16.21-2016
		Pipe Diameter
		1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3	3 1/2	4	5	6	8	10	12	14	16	18	20	24
Inside Diameter		0.84	1.06	1.31	1.66	2.38	2.38	2.88	3.50	4.00	4.50	5.56	6.63	8.63	10.75	12.75	14.00	16.00	18.00	20.00	24.00
Outside Diameter per Class	150#	1.88	2.25	2.62	3.00	3.38	4.12	4.88	5.38	6.38	6.88	7.75	8.75	11.00	13.38	16.13	17.75	20.25	21.62	23.88	28.25
	300#	2.12	2.62	2.88	3.25	3.75	4.38	5.12	5.88	6.50	7.12	8.50	9.88	12.12	14.25	16.62	19.12	21.25	23.50	25.75	30.50
	600#	2.12	2.62	2.88	3.25	3.75	4.38	5.12	5.88	6.38	7.62	9.50	10.50	12.62	15.75	18.00	19.38	22.25	24.12	26.88	31.12

Per ASME B16.47-2017
Series A		Pipe Diameter
Series A		26	28	30	32	34	36	38	40	42	44	46	48	50	52	54	56	58	60
Inside Diameter		26.00	28.00	30.00	32.00	34.00	36.00	38.00	40.00	42.00	44.00	46.00	48.00	50.00	52.00	54.00	56.00	58.00	60.00
Outside Diameter per Class	150#	30.50	32.75	34.75	37.00	39.00	41.25	43.75	45.75	48.00	50.25	52.25	54.50	56.50	58.75	61.00	63.25	65.50	67.50
	300#	32.88	35.38	37.50	39.62	41.62	44.00	41.50	43.88	45.88	48.00	50.12	52.12	54.25	56.25	58.75	60.75	62.75	64.75
	600#	34.12	36.00	38.25	40.25	42.25	44.50	43.50	45.50	48.00	50.00	52.26	54.75	57.00	59.00	61.25	63.50	65.50	67.75
Per ASME B16.47-2017
Series B		Pipe Diameter
Series B		26	28	30	32	34	36	38	40	42	44	46	48	50	52	54	56	58	60
Inside Diameter		26.00	28.00	30.00	32.00	34.00	36.00	38.00	40.00	42.00	44.00	46.00	48.00	50.00	52.00	54.00	56.00	58.00	60.00
Outside Diameter per Class	150#	28.56	30.56	32.56	34.69	36.81	38.88	41.12	43.12	45.12	47.12	49.44	51.44	53.44	55.44	57.62	59.62	62.19	64.19
	300#	30.38	32.50	34.88	37.00	39.12	41.25	43.25	45.25	47.25	49.25	51.88	53.88	55.88	57.88	61.25	62.75	65.19	67.12
	600#	30.12	32.25	34.62	36.75	39.25	41.25

All dimensions are in inches.

Neoprene Ring Gasket

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Pipe Diameter Flange Rating Series Thickness Item # Availability Price Quantity UOM

150#

1/8

GR100B-1500400-1/8

In Stock

$3.09/EA

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4 150# 1/8 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

$3.09/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.09/EA
90	$2.8839/EA
360	$2.11171/EA
1080	$1.52461/EA

300#

1/8

GR100B-3000400-1/8

1-3 Working Days

$3.49/EA

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4 300# 1/8 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

$3.49/EA

Qty

1-3 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$3.49/EA
80	$3.25722/EA
320	$2.38507/EA
960	$1.72197/EA

150#

1/16

GR100B-1500400

1-3 Working Days

$2.13/EA

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4 150# 1/16 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

$2.13/EA

Qty

1-3 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$2.13/EA
170	$1.98793/EA
680	$1.45564/EA
2040	$1.05094/EA

300#

1/16

GR100B-3000400

1-3 Working Days

$2.41/EA

See Quantity Discounts

4 300# 1/16 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

$2.41/EA

Qty

1-3 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$2.41/EA
160	$2.24925/EA
640	$1.64699/EA
1920	$1.18909/EA

Typical Physical Properties:
Dimension			1/8"
Hardness (shore A)			65 +/- 5
Density (g/cm3)			1.50
Tensile Strength (mpa)			3.00
Elongation (%)			250
Temperature			-4F to 248F (-20C to 120C)

Neoprene Ring Gasket

Technical Data

Governing Standards

Governing StandardsNeoprene Ring Gasket

Physical Properties

Physical PropertiesNeoprene Ring Gasket

Dimensional Specifications

Dimensional SpecificationsNeoprene Ring Gasket

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4 150# 1/8 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

4 300# 1/8 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

4 150# 1/16 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

4 300# 1/16 NEOPRENE 60 DUROMETER +/- 5 RING GASKET

ASME B16.21	Covers types, sizes, materials, dimensions, tolerances, and markings for nonmetallic flat gaskets.
ASME B16.47	Covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60. Included are flanges with rating class designations 75, 150, 300, 400, 600, and 900 with requirements given in both SI (Metric) and U. S. Customary units, with diameter of bolts and flange bolt hole expressed in inch units.