20 Best 3 8 O Ring [2025]

Are you looking for the best 3 8 O Ring? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 3 8 O Ring.

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1 uxcell Fluorine Rubber O-Rings 14mm OD 8mm ID 3mm Width, Metric FKM Sealing Gasket, Pack of 5 uxcell Fluorine Rubber O-Rings 14mm OD 8mm ID 3mm Width, Metric FKM Sealing Gasket, Pack of 5
2 3Pairs Lightweight Ear Gauges Plugs Tunnels 8G/3mm 316L Stainless Steel Prong Setting Clear/Black CZ... 3Pairs Lightweight Ear Gauges Plugs Tunnels 8G/3mm 316L Stainless Steel Prong Setting Clear/Black...
3 uxcell Silicone O-Ring, 14mm OD, 8mm ID, 3mm Width, VMQ Seal Rings Gasket, White, Pack of 20 uxcell Silicone O-Ring, 14mm OD, 8mm ID, 3mm Width, VMQ Seal Rings Gasket, White, Pack of 20
4 Gavin parts shop 1/4' 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(50/Pack) Gavin parts shop 1/4" 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(50/Pack)
5 2-018/N7-3/4'' X 7/8'' X 1/16'' 70 Buna O-Ring (10 Pack) 2-018/N7-3/4'' X 7/8'' X 1/16'' 70 Buna O-Ring (10 Pack)
6 Ruifan 316L Surgical Steel Single Flare Prong Set Clear CZ Ear Stretcher Expander Plugs Piercing... Ruifan 316L Surgical Steel Single Flare Prong Set Clear CZ Ear Stretcher Expander Plugs Piercing...
7 1/4' 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(25+25/Pack) 1/4" 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(25+25/Pack)
8 palart 1/4' & 3/8' Pressure Washer QD Colored O-Rings (1/4''&3/8''(25+25) 50 Pack (Red+Grey),M22... palart 1/4" & 3/8" Pressure Washer QD Colored O-Rings (1/4''&3/8''(25+25) 50 Pack...
9 2-237/N7-3-3/8'' X 3-5/8'' X 1/8'' 70 Buna O-Ring (5 Pack) 2-237/N7-3-3/8'' X 3-5/8'' X 1/8'' 70 Buna O-Ring (5 Pack)
10 BIG GAUGES 3 Pairs Black Acrylic White 8g Gauge 3mm Spiral Taper Expander Piercing Jewelry Ear... BIG GAUGES 3 Pairs Black Acrylic White 8g Gauge 3mm Spiral Taper Expander Piercing Jewelry Ear...
11 uxcell Silicone O-Ring, 14mm OD, 8mm ID, 3mm Width, VMQ Seal Rings Gasket, White, Pack of 10 uxcell Silicone O-Ring, 14mm OD, 8mm ID, 3mm Width, VMQ Seal Rings Gasket, White, Pack of 10
12 BULUSHI 100 Pcs Silicone O Ring Seal Sealing Gasket 3mm x 8mm x 2.5mm BULUSHI 100 Pcs Silicone O Ring Seal Sealing Gasket 3mm x 8mm x 2.5mm
13 METOWARE Trailer Hitch Receiver Pin Lock, 5/8' Dia, 4” Long Pin with 8 Rubber O-Rings, Fits... METOWARE Trailer Hitch Receiver Pin Lock, 5/8" Dia, 4” Long Pin with 8 Rubber O-Rings, Fits...
14 8-14G PVD Plated Stainless Steel Black Septum Pincher Nose Ring with 2 Black O-Rings (Gauge: 3mm... 8-14G PVD Plated Stainless Steel Black Septum Pincher Nose Ring with 2 Black O-Rings (Gauge: 3mm...
15 Dixon 1238-08-08 Zinc Plated Steel Hydraulic Pipe Fitting, 90 Degree Elbow, 3/4'-16 Male SAE O-ring... Dixon 1238-08-08 Zinc Plated Steel Hydraulic Pipe Fitting, 90 Degree Elbow, 3/4"-16 Male SAE...
16 3/8'' Diameter, -110, Oil-Resistant Buna N O-Rings (100 EA per Pack) 3/8'' Diameter, -110, Oil-Resistant Buna N O-Rings (100 EA per Pack)
17 ZS Set of 3 Pairs Single Flare Acrylic Ear Plugs Tunnel Expander Piercing Ear Gauges with O-Ring... ZS Set of 3 Pairs Single Flare Acrylic Ear Plugs Tunnel Expander Piercing Ear Gauges with O-Ring...
18 Brennan Industries 6401-06-06-O Steel Straight Tube Fitting, 9/16'-18 SAE ORB x 3/8'-18 NPTF Thread,... Brennan Industries 6401-06-06-O Steel Straight Tube Fitting, 9/16"-18 SAE ORB x 3/8"-18 NPTF...
19 TITISKIN 1/4' & 3/8' Pressure Washer QD Colored O-Rings (1/4''&3/8''(25+25) 50 Pack... TITISKIN 1/4" & 3/8" Pressure Washer QD Colored O-Rings (1/4''&3/8''(25+25) 50 Pack...
20 BIG GAUGES 2 Pairs of Surgical Steel 8g Gauge 3mm Black Anodized 10mm Pincher Septum Taper O-Rings... BIG GAUGES 2 Pairs of Surgical Steel 8g Gauge 3mm Black Anodized 10mm Pincher Septum Taper...
Bestseller No. 1
uxcell Fluorine Rubber O-Rings 14mm OD 8mm ID 3mm Width, Metric FKM Sealing Gasket, Pack of 5
  • [Size] - Outer Diameter: 14mm; Inner Diameter: 8mm; Cross-Section Diameter: 3mm
  • [Hardness] - 70A Durometer (Shore Hardness) for resistance to penetration
  • [FKM] - Standard Fluorine Rubber with a wide temperature range from -30℉ (-22°C) to 280℉ (536°C)
  • [Application] - Widely used for pressure washer, filter, pump, water hose, plumbing pipe, mechanical and much more
  • [NOTE] - Please confirm the required size and material before purchase, and put it in the right place
Bestseller No. 2
3Pairs Lightweight Ear Gauges Plugs Tunnels 8G/3mm 316L Stainless Steel Prong Setting Clear/Black CZ...
  • ♥ (YOU WILL GET A FREE REPALCEMENT!!! ):Please Choose the Suitable Size Before Purchase,If You are Having Problems with Quality or Size When Using...
  • HIGH-GRADE PACKAGING BAG:This Ear Gange Plugs Stainless Steel Tunnels Come with Gift Box,package includes 6PCS(3 Pairs) of Single Flared Ring...
  • SMOOTH SURFACE+SHINY CZ: High Polished Surface in Surgical Stainless Steel is Very Comfortable and Prevents Damage and Irritation to Your Piercing,...
  • VARIOUS SiZES & WEIGHT:Gauge:8G=3mm,Lightweight and Comfortable to Wear,Easily Expand Ears by Choose Right Size
  • USER-FRIENDLY DESIGN:The Ear Plugs Flare is a Raised Lip That Prevents the Tunnels From Sliding in or Out of a Piercing,Single Flare Tunnels Only Have...
Bestseller No. 3
uxcell Silicone O-Ring, 14mm OD, 8mm ID, 3mm Width, VMQ Seal Rings Gasket, White, Pack of 20
  • [Size] - 14mm Outside Diameter, 8mm Inner Diameter, 3mm Cross-Section Diameter
  • [VMQ] - Durable 50A silicone with a wide temperature range from -22℉ (-30℃) to 392℉ (200℃)
  • [Advantage] - Waterproof, temperature resistance, ozone resistance, strong sealing, and can be insulated
  • [Application] - Widely used for heat exchanger, boiler, filter, blender, coffee machine, plumbing, doors and windows, household electrical appliance,...
  • [NOTE] - Please confirm the required size and material before purchase, and install it in the right place
Bestseller No. 4
Gavin parts shop 1/4" 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(50/Pack)
  • 1/4" 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(50/pack)
  • 25-Orange O-Rings For 1/4’’ Pressure Washer Quick Coulper QD
  • 25-Grey O-Rings For 3/8’’ Pressure Washer Quick Coulper QD
  • Both o-rings are 0.1 inch thick
Bestseller No. 6
Ruifan 316L Surgical Steel Single Flare Prong Set Clear CZ Ear Stretcher Expander Plugs Piercing...
  • Antiallergenic and Satisfaction Guarantee.
  • Material: 316L Surgical Stainless Steel
  • Plugs Sizes have 8G (3mm), 6G (4mm), 4G (5mm), 2G (6mm), 0G (8mm), 00G (10mm) available.
  • Plugs Size:8G (3mm)
  • Package Included: 1 pair Plug Gauges, come with one free gift velvet bag.
Bestseller No. 7
1/4" 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(25+25/Pack)
  • 1/4" 3/8'' Pressure Washer Quick Coulper QD Colored O-Rings(50/Pack)
  • 25-Orange O-Rings For 1/4’’ Pressure Washer Quick Coulper QD
  • 25-Grey O-Rings For 3/8’’ Pressure Washer Quick Coulper QD
  • O-Rings size for 1/4": outside diameter: 14.0 mm; Inside diameter: 9.2 mmThese o-rings are designed for 1/4" Quick Connect fittings found on many...
Bestseller No. 8
palart 1/4" & 3/8" Pressure Washer QD Colored O-Rings (1/4''&3/8''(25+25) 50 Pack (Red+Grey),M22...
  • 25pc - 1/4" QD O-Rings Orange (3/8"ID), 25pc - 3/8" QD O-Rings Gray (1/2"ID)
  • Quick Disconnect O-Rings for general purpose water applications up to 212°F (100°C)
  • Buna-N O-Rings are the most common and the simplest types of seal with an excellent sealing property and durability. Recommended for use with crude...
  • Changing your o-rings in a timely manner saves you the continual messy water leaks, loss of maximum water pressure, and unnecessary water use and...
Bestseller No. 10
BIG GAUGES 3 Pairs Black Acrylic White 8g Gauge 3mm Spiral Taper Expander Piercing Jewelry Ear...
  • HIGH QUALITY GRADE ACRYLIC - This acrylic is certified for implant use, so it minimizes the risk of infections in your piercing. It’s a lightweight...
  • FEEL SECURE - The rubber o-ring in these Ear Plugs Tapers means you don’t have to worry about them staying in place.
  • LIGHT AND COMFY - These Ear Gauges Tapers are effortless to wear and won’t pull or weight down your piercing. DETAILS : Ear Expander 3mm, Black 8...
  • KEEP YOUR JEWELRY SAFE - This purchase comes with satin pouch, so you have somewhere safe to store your Ear Gauging Tape when not in use.
  • YOU RECEIVE - 3 Pairs, A pair of 8g Gauge 3mm Black Acrylic Taper Ear Gauges with Silicone O rings. A pair of 8g Gauge 3mm White Acrylic Ear Gauge...
Bestseller No. 11
uxcell Silicone O-Ring, 14mm OD, 8mm ID, 3mm Width, VMQ Seal Rings Gasket, White, Pack of 10
  • [Size] - 14mm Outside Diameter, 8mm Inner Diameter, 3mm Cross-Section Diameter
  • [VMQ] - Durable 50A silicone with a wide temperature range from -22℉ (-30℃) to 392℉ (200℃)
  • [Advantage] - Waterproof, temperature resistance, ozone resistance, strong sealing, and can be insulated
  • [Application] - Widely used for heat exchanger, boiler, filter, blender, coffee machine, plumbing, doors and windows, household electrical appliance,...
  • [NOTE] - Please confirm the required size and material before purchase, and install it in the right place
Bestseller No. 12
BULUSHI 100 Pcs Silicone O Ring Seal Sealing Gasket 3mm x 8mm x 2.5mm
  • Product Name O Ring Material Silicone
  • Inside Diameter 3mm/ 0.12" Outside Diameter 8mm/ 0.31"
  • Thickness 2.5mm/ 0.1" Color Brick Red
  • Weight: 16g
  • Package Content: 100 Pcs(±2%) x O Ring
Bestseller No. 13
METOWARE Trailer Hitch Receiver Pin Lock, 5/8" Dia, 4” Long Pin with 8 Rubber O-Rings, Fits...
  • HEAVY DUTY TRAILER HITCH PIN LOCK – It’s a newly upgraded trailer hitch pin lock with all metal construction. Two tubular keys are included to...
  • UNIVERSAL COMPATIBILITY - The Trailer Hitch Pin Lock is designed with a diameter 5/8" and a length of 4”. It is compatible with class III IV...
  • SAFE & EASY TO USE - The core of the lock is made of premium zinc alloy tubular. Its anti-theft design can withstand significant blogs from different...
  • PRODUCT OF REMARKABLE WORKMANSHIP - The lock features high quality solid steel with black electrophoretic paint. It is quite sturdy and can carry up...
  • WARRANTY SERVICE – We warrant the quality of our products. If you are not satisfied with our lock within 34 days of your purchase, you will get all...
Bestseller No. 14
8-14G PVD Plated Stainless Steel Black Septum Pincher Nose Ring with 2 Black O-Rings (Gauge: 3mm...
  • STYLE: Black Septum Pincher Nose Ring with 2 Black O-Rings
  • MATERIAL: stainless steel and rubber o-rings
  • GAUGE/BAR THICKNESS: choose 8GA (3mm), 10GA (2.4mm), 12GA (2mm), or 14GA (1.6mm)
  • DIAMETER LENGTH: choose 3/8" (10mm) or 1/2" (12mm)
Bestseller No. 15
Dixon 1238-08-08 Zinc Plated Steel Hydraulic Pipe Fitting, 90 Degree Elbow, 3/4"-16 Male SAE O-ring...
  • 90 degree Elbow for hydraulic pipe fittings
  • Made of Zinc Plated Steel
  • On hose assemblies, pressure rating is the lower of either the rating of the coupling or the hose at 70 degrees F
  • 3/4"-16 Male SAE O-ring Boss x 3/4"-16 Male SAE Screw
  • Working Pressure: 4500 psi. Weight: 0.2500 Pounds
Bestseller No. 16
3/8'' Diameter, -110, Oil-Resistant Buna N O-Rings (100 EA per Pack)
  • Dash Number: -110 , Fractional ID: 3/8'' , Actual ID: 0.362'', Actual OD: 0.568'' , Width (Cross Section): 0.103''
  • -40 to 225 Degrees F
  • Performs well in: petroleum oils and fuels, silicone oils and greases, ethylene glycol, dilute acids, water
  • SAE AS568, ASTM D1418, ASTM D2000, SAE J200.
  • 70A Durometer
Bestseller No. 17
ZS Set of 3 Pairs Single Flare Acrylic Ear Plugs Tunnel Expander Piercing Ear Gauges with O-Ring...
  • Made of high quality acrylic, durable.
  • Gauge:4g(5mm),2g(6mm),1g(7mm),0g(8mm),00g(10mm),7/16"(11mm),1/2"(12mm),5/8"(16mm),11/16"(18mm),3/4" (20 mm),Please choose suitable size.
  • New unique design of ear plugs for gauged / stretched ears! This great design has a groove in the back to hold the o-ring.
  • These are perfect for daily wearing , Suit for both men and women, You will create your own unique ear piercings and show your personality.
  • You will receive 3 pair (black, clear, white) acrylic ear plugs, comes with, comes with individual package. Please look for the ZS Jewelry store for...
Bestseller No. 18
Brennan Industries 6401-06-06-O Steel Straight Tube Fitting, 9/16"-18 SAE ORB x 3/8"-18 NPTF Thread,...
  • Product Type :Mechanical Components
  • Item Shape : Adapter
  • Package Quantity :1
  • Package Weight :0.1Lbs
Bestseller No. 19
TITISKIN 1/4" & 3/8" Pressure Washer QD Colored O-Rings (1/4''&3/8''(25+25) 50 Pack...
  • Pressure Washer O-Rings for Quick Disconnect Hose Fittings
  • 25pc - 1/4" QD O-Rings Orange (3/8"ID) 25pc - 3/8" QD O-Rings Gray (1/2"ID)
  • Quick Disconnect O-Rings for general purpose water applications up to 212°F (100°C).
  • Buna-N O-Rings are the most common and the simplest types of seal with an excellent sealing property and durability.
  • Recommended for use with crude oil, gasoline, propane, petroleum oils and water. It is used in engines, gearboxes and also can be found in anything...
Bestseller No. 20
BIG GAUGES 2 Pairs of Surgical Steel 8g Gauge 3mm Black Anodized 10mm Pincher Septum Taper O-Rings...
  • QUALITY STAINLESS STEEL Surgical steel is used in our ; it’s implant grade and biologically compatible which means it won’t irritate. Surgical...
  • ANODIZED COATING This coating applied to these not only helps reduce the chance of infection, but it provides a durable color that is resistant to...
  • HASSLE FREE These don’t require the use of lubricants which makes them easy to use. DETAILS : Ear Gauges Jewelry, Black 8 Gauge Earrings, 8 Gauge...
  • TAILORED We measure these before we post them so you can be assured that they are the right size for you.
  • YOU RECEIVE 2 Pairs 316L Surgical Steel and Black Anodized Ear Stretching Taper Set, (Septum Pincher) Silicone O rings. A pair of 316L Surgical Steel...

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After hours of searching and using all the models on the market, we have found the best 3 8 O Ring for 2023. See our ranking below!

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  • What benefits are there with buying an 3 8 O Ring?
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  • Why is it crucial to invest in any 3 8 O Ring, much less the best one?
  • Which 3 8 O Ring are good in the current market?
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Potential sources can include buying guides for 3 8 O Ring, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 3 8 O Ring. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an 3 8 O Ring buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

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  1. Brand Value: Every brand of 3 8 O Ring has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 3 8 O Ring?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 3 8 O Ring.
  5. Customer Ratings: Number ratings grade 3 8 O Ring objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 3 8 O Ring.
  7. Product Quality: You don’t always get what you pay for with an 3 8 O Ring, sometimes less, and sometimes more.
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Related Post:

FAQ:

Q: What are the different sizes of O-rings?

A: Metric O-Ring Size Chart – Common Metric O-Ring Sizes Size: Common I.D. Inch O.D. Inch I.D. MM O.D. MM 1X4.5 Order This Size 0.177 0.256 4.50 6.50 1X5 Order This Size 0.197 0.276 5.00 7.00 1X5.5 Order This Size 0.217 0.295 5.50 7.50 1X6 Order This Size 0.236 0.315 6.00 8.00 21 more rows …

Q: What is the best O ring for a leaking faucet?

A: The DANCO #8 O-Rings are perfect for repairing leaky faucets. The simplicity of o-rings is a standard ring in various sizes, and yet they have the most engineered, precise, and useful seal designs ever developed. Sizes are determined by the inside diameter and the cross-section diameter.

Q: What type of back-up rings are used in O-rings?

A: Back-up rings may be used. Design Chart 7 shows the groove width necessary to accommodate the thickness of the back-up rings. Teflon back-up rings are usually furnished in single or dual turn rings. Single turn rings conform to MS 28774 and match the standard P.A.I. O-ring sire.

Q: What are O-rings used for?

A: Many O-ring applications, of course, involve metal parts turned out on lathes and screw machines. Inevitably, some large production runs are found beyond tolerance. The established O-ring size will not perform its sealing function.