Medium
15-30 minutes
O-rings are designed to contain thousands of pounds of pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness.
There are many causes for O-Ring failure, such as pressure, friction, temperature or chemicals. The most common are:
• Extrusion and Nibbling – O-ring has ragged, tattered edges. These are commonly caused by pressure spikes which shear off tiny “bites” from the o-ring, or caused by clearance gaps.
• Abrasion – One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that is too rough, contains grit or is too smooth to allow lubrication.
• Over Compression – O-ring is flattened on both sides and may have a “ring” split along its length. Commonly caused by excessive pressure or heat.
• Heat Hardening – O-ring has a pitted or cracked surface, and often is flattened on both sides. Caused by temperature exceeding o-ring capacity.
• Weather/Ozone Cracking – O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching causes similar cracking.
O-ring 5 213021-5
OEM part for: Makita
Part Number: 213021-5
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This O-ring 5 will fit the following 104 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Makita
Show More Compatible ModelsThis item works with the following types of products:
- Miter Saw Parts
- Saw Parts
Customer Part Reviews ?
- 1
Questions & Answers ?
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Does this fit my product?Questions & Answers for O-ring 5
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Many parts were damaged or missing due to over 10 years of professional use.
Tool Type
Miter Saw
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Power Drill, Socket set, Wrench Set
Parts Used
- Compression Spring 28 - 233165-5
- Stopper Pin - 322317-4
- O-ring 5 - 213021-5
- Hex. Lock Nut M6-10 - 252014-7
- Sub Fence - 150710-0
- Flat Washer 6 - 253715-0
- Countersunk Head Screw M6x35 - 912357-6
- Miter Scale Plate - 816326-8
- Socket Wrench 13 - 782232-8
- Fluorescent Light Set - 193595-1
- Strain Reliever - 901266
- Screw - 330019-32
- Light Assembly - 125337-5
- Dust Cap A&m4931 3579 87 - 45-12-0525
- Plastic Shoe Cover - 48-08-0533
- Foot - N074647
Dry rotted cord gaurd and cord
Tool Type
Chop Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, allen wrench
Broken tilt lock
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Drift pin to remove broken pin
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
