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Transmission seals and O-rings are critical components that prevent leaks and maintain proper fluid pressure within your vehicle's transmission. Selecting the correct replacement parts ensures optimal performance, prevents costly damage, and extends the life of your transmission. Investing in high-quality seals and O-rings is essential for any automotive repair or maintenance task.
Our provide with a clear plastic box, which features 18 individual compartments, it easy for you to quickly pick up the O-ring you need, saving you time
The rubber washer assortment is made of high quality rubber material,good sealing performance,not easy to break in long term use
These sealing rings all of which are commonly used sizes to meet your daily use needs ,can be widely used in most cars, motorcycles, ships, engines
These sealing gasket has a certain degree of softness and elasticity, and can adapt to ports of different shapes and sizes
You will receive 300 PCS O-ring rubber washers , you can use it in engineering pipelines, taps, pumps, solenoid valves, pressure gauges, sensors, motorbikes, ships, engines
Buyer's Guide - Our package contains 1040 pcs replaceable o ring assortment kit of 21 sizes. For optimal performance, please verify the required size before purchase to ensure proper fitment.
Durable Material - Crafted from high-quality Nitrile Rubber with a working temperature range of -40℉/-40℃ to 248℉/120℃, resist scratching surfaces, and deliver long-lasting, leak-proof sealing performance.
Universal Sealing Solution - This O-ring set is ideal for a wide range of applications, including faucets, pressure washers, automotive engines, pumps, solenoid valves, sensors, power systems, control boxes, appliances, electronic devices, tools, and...
Easy Storage - Features a full assortment of black O-rings in multiple sizes, neatly organized in a durable transparent case with individual compartments for easy identification and access.
Quality service - Have a question about your 1040 pcs o ring assortment kit? Our reliable customer service team is ready to assist you, ensuring you find the perfect seal for your needs.
Direct replacement - this O-ring assortment is designed to match the fit and function of the original O-rings required for common repairs on specified vehicles
Restores functionality - this O-ring set is made to fit and fully restore part functionality after the original O-rings fail
Durable construction - these parts are made from quality materials to ensure reliable performance and long service life
Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team
UNIVERSAL FIT FOR 4L60E, 4L80E, TH350, 700R4 & MORE — Designed to fit a wide range of GM and Chevrolet automatic transmissions including 4L60, 4L60E, 4L80E, TH350, TH700, and 700R4. Works with Chevy Silverado, GMC Sierra, Tahoe, Suburban, Camaro...
STOPS TRANSMISSION FLUID LEAKS PERMANENTLY — Worn or cracked dipstick tube grommets are a leading cause of transmission fluid leaks at the dipstick base. Our precision-molded seals create an airtight, leak-free fit that restores proper sealing and...
PREMIUM NITRILE RUBBER — HEAT & OIL RESISTANT — Made from high-grade NBR (nitrile butadiene rubber) engineered to withstand continuous exposure to ATF transmission fluid, high operating temperatures up to 250°F, and engine bay heat cycles. Resists...
EASY DIY INSTALLATION — NO SPECIAL TOOLS NEEDED — Simple press-fit installation takes less than 5 minutes. Remove the old grommet, clean the tube seat, press the new seal into place — done. No adhesives, no gasket makers, no shop visit required...
INCLUDES 1 SEAL — READY TO INSTALL, SATISFACTION GUARANTEED — Each order includes 1 precision-fit dipstick tube seal/grommet, ready to install right out of the package. Need extras for a second vehicle or future maintenance? Simply order multiple...
{WIDE APPLICATION} O ring kit for faucets,plumbing,pressure washer,hose nozzles,sinks,filters,hydraulics fluid,auto engines, machinery bearings,pumps,boats,oils,gas control valve, spray, air,kitchen bathroom water fitting seal leak repair
{MULTIPLE SIZE} Metric oring assortment kits contains the most commonly used 22 size ID:(3mm, 4mm, 4.5mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 13mm, 14mm, 17mm, 18mm, 20mm, 22mm, 25mm, 27mm) x Thk:(1mm, 2mm, 2.4mm, 2.5mm, 3mm, 4mm),can meet almost all...
{MATERIAL} Rubber o rings set made of high-quality commercial grade black nitrile(NBR,Buna-N),it has excellent high temperature and low temperature resistance,the working temperature range is from -40℃/-40℉ to 120℃/248℉,maintains good...
{CONVENIENT STORAGE} Assorted o rings rubber are placed in a sturdy plastic storage box, each size with detailed label paper,are stored in order of small to large for easy retrieval.It can be used for months or even years rather than buying them at a...
{SATISFACTION GUANTEE} TWCC brand always guarantees high-quality products and good after-sales service. If you have any unhappy,we would return your kit for free with no reason
Fit for Subaru Models: for 2016-2021 Crosstrek, 2014-2021 Forester, 2012-2021 Impreza, 2013-2021 Legacy, 2013-2021 Outback, and 2013-2015 XV Crosstrek, ensuring seamless compatibility with your Subaru's CVT transmission system
Premium Quality Seal: The 12.3x2.4mm O-ring is crafted from durable materials to provide a tight, leak-proof seal
Restore Transmission Performance: Replace worn-out seals with this 2-pack of 806912200 O-rings to enhance transmission control, maintain optimal fluid pressure, and restore your vehicle's peak performance and efficiency
Reliable Durability: Built to withstand the high-stress environment of CVT transmissions, these valve seals offer long-lasting reliability, reducing the risk of transmission failure and extending the lifespan of your drivetrain
Premium Material: These assorted o rings are made of outstanding rubber material with good air tightness and high temperature resistance, which are oil resistant, heat resistant, wear resistant and durable for long time use.
Easy to Use: Soft and flexible rubber seal o ring, just clip it on, easy to use. Rubber o-rings can prevent metal-to-metal contact thereby protecting wiring, cables running through firewalls, metal panels, and so on.
Easy to Carry: These rubber o-ring washers are packed in a divided and labeled storage box, you can save your efforts to find and choose the size, which is convenient for your storage and picking.
Wide Applications: Widely used as sealing rings and washers for the connectors of hydraulic machines, pipelines, etc. Ideal for plumbing, auto repair, garage, workshop, automobile, door, window, appliance, bearing, pump, pulley, etc.
Package Includes: You will receive a total of 360 pieces of rubber o-rings in 24 commonly used sizes, the sufficient quantity is enough to meet your long-term use and meet a variety of tasks. The hydraulic seals are delicate, fine and rigorously...
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions
Last update on 2026-07-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Transmission Seals & O-Rings
When to Replace Seals and O-Rings
Signs of failing transmission seals or O-rings include visible fluid leaks under your vehicle, a burning smell, or noticeable changes in shifting performance. Low transmission fluid levels can also indicate a leak. It's advisable to inspect and replace these components preventatively during major transmission service or when encountering any of these symptoms to avoid more severe and expensive repairs.
Frequently Asked Questions
What is the difference between a transmission seal and an O-ring?
Transmission seals are typically designed to seal rotating shafts or irregular surfaces, often featuring a lip or spring mechanism. O-rings are simpler, circular rings used to seal static or dynamic joints, relying on compression to create a seal.
How do I find the correct size and type of seal or O-ring for my car?
The most reliable method is to consult your vehicle's owner's manual or a repair manual specific to your car's make and model. You can also provide your vehicle's VIN to an auto parts store or mechanic to ensure an exact match.
Can I reuse old transmission seals or O-rings?
It is strongly recommended not to reuse old seals or O-rings. They are designed for single use and can become brittle, deformed, or lose their sealing properties over time, leading to leaks.
What are the common causes of transmission seal failure?
Common causes include age and wear, exposure to extreme temperatures, contamination of transmission fluid, and improper installation. Physical damage from debris can also compromise their integrity.
How often should transmission seals and O-rings be replaced?
There isn't a fixed replacement interval for seals and O-rings as it depends on vehicle usage, driving conditions, and maintenance. They are typically replaced during transmission overhauls or when leaks are detected.
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