Name: Scuba Regulator Rubber O-Rings
Brand: LINDE POLYMER
SKU: 259781674

Description

Technical Parameters

Products Description

Scuba-Regulator-Rubber-O-Rings

Scuba regulator rubber O-rings are key components in diving regulators, used to form a seal at the connection between the diving cylinder and the regulator, and mainly used to seal and prevent water or air leakage.

function of Scuba Regulator Rubber O-Rings

Sealing function: O-rings play a critical sealing role in scuba regulators, cylinder valves, and other connecting parts to ensure that the equipment remains airtight underwater.

Prevent leakage: By tightly fitting the contact surface between two parts, O-rings can prevent the leakage of air or water, thereby ensuring diving safety.

Reduce wear: O-rings can provide a buffer between the moving parts of the regulator, reducing friction and wear, and thereby extending the service life of the equipment.

Applicable Material

Material	Description
Fluorocarbon Elastomers (FPM/FKM/Viton®)	O-rings made of FPM/FKM/Viton have been the preferred choice for oxygen and nitrox compatibility in scuba diving applications. FPM/FKM/Viton is an elastomer with excellent oil and oxygen resistance at high and low temperatures, and very good chemical resistance.
Ethylene Propylene Diene Monomer (EPDM)	EPDM O-rings are becoming more common in scuba because some people feel it's a safer material for use in breathing air systems. EPDM is an elastomer with excellent weather ability, heat resistance, dielectric qualities, and odor-free characteristics.

FKM/Viton/FPM

Features: Fluororubber has excellent resistance to high temperature and chemical corrosion, and is suitable for use in high-pressure and high-temperature environments.

Applicability: Recommended for applications that require higher chemical compatibility, such as oxygen systems.

FKM 75	Property	Unit	Test Method	Test Parameter	Value
	Hardness	Shore A	ASTM D 2240		77 +3/-2
	Tensile Strength	MPa	ASTM D 412		11.1
	Ultimate Elongation	%	ASTM D 412		180
	Specific Gravity	g/cm³	ASTM D 297		2.16
	Compression Set	%	ASTM D 395 B	22h / 200°C	13
	Low temp. resistance	°C	ASTM D 1329	TR10	-16

EPDM

Features: EPDM rubber has good resistance to water and environmental factors, and is resistant to ozone.

Applicability: Suitable for applications that require long-term contact with water.

Common dimensions of O-rings

O-Ring Standard Size
SIZE	NOMINAL (REF.) MEASUREMENTS IN INCHES			STANDARD O-RING MEASUREMENTS IN INCHES				METRIC O-RING MEASUREMENTS IN MILLIMETERS
SIZE	ID	OD	CS	ID	±	CS	±	ID	±	CS	±
248	43/4	5	1/8	4.734	0.030	0.139	0.004	120.24	0.76	3.53	0.10
249	47/8	51/8	1/8	4.859	0.035	0.139	0.004	123.42	0.89	3.53	0.10
250	5	51/4	1/8	4.984	0.035	0.139	0.004	126.59	0.89	3.53	0.10
251	51/8	53/8	1/8	5.109	0.035	0.139	0.004	129.77	0.89	3.53	0.10
252	51/4	51/2	1/8	5.234	0.035	0.139	0.004	132.94	0.89	3.53	0.10
253	53/8	55/8	1/8	5.359	0.035	0.139	0.004	136.12	0.89	3.53	0.10
254	51/2	53/4	1/8	5.484	0.035	0.139	0.004	139.29	0.89	3.53	0.10
255	55/8	57/8	1/8	5.609	0.035	0.139	0.004	142.47	0.89	3.53	0.10
256	53/4	6 1/8	1/8	5.734	0.035	0.139	0.004	145.64	0.89	3.53	0.10
257	57/8	61/8	1/8	5.859	0.035	0.139	0.004	148.82	0.89	3.53	0.10
258	6	61/4	1/8	5.984	0.035	0.139	0.004	151.99	0.89	3.53	0.10
259	61/4	61/2	1/8	6.234	0.040	0.139	0.004	158.34	1.02	3.53	0.10
260	61/2	63/4	1/8	6.484	0.040	0.139	0.004	164.69	1.02	3.53	0.10
261	63/4	7	1/8	6.734	0.040	0.139	0.004	171.04	1.02	3.53	0.10
262	7	71/4	1/8	6.984	0.040	0.139	0.004	177.39	1.02	3.53	0.10
263	71/4	71/2	1/8	7.234	0.045	0.139	0.004	183.74	1.14	3.53	0.10
264	71/2	73/4	1/8	7.484	0.045	0.139	0.004	190.09	1.14	3.53	0.10
265	73/4	8	1/8	7.734	0.045	0.139	0.004	196.44	1.14	3.53	0.10
266	8	81/4	1/8	7.984	0.045	0.139	0.004	202.79	1.14	3.53	0.10
267	81/4	81/2	1/8	8.234	0.050	0.139	0.004	209.14	1.27	3.53	0.10
268	81/2	83/4	1/8	8.484	0.050	0.139	0.004	215.49	1.27	3.53	0.10
269	83/4	9	1/8	8.734	0.050	0.139	0.004	221.84	1.27	3.53	0.10
270	9	91/4	1/8	8.984	0.050	0.139	0.004	228.19	1.27	3.53	0.10
271	91/4	91/2	1/8	9.234	0.055	0.139	0.004	234.54	1.40	3.53	0.10
272	91/2	93/4	1/8	9.484	0.055	0.139	0.004	240.89	1.40	3.53	0.10
273	93/4	10	1/8	9.734	0.055	0.139	0.004	247.24	1.40	3.53	0.10
274	10	101/4	1/8	9.984	0.055	0.139	0.004	253.59	1.40	3.53	0.10
275	101/2	103/4	1/8	10.484	0.055	0.139	0.004	266.29	1.40	3.53	0.10

about Us

Company profile

Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.