6 Best Kitchen Sink Faucet Repair Kits for Every Fix (2026)

Updated November 2026

Shopping for a kitchen sink faucet repair kit can feel like guessing at a part number you cannot see. This list compares six kits built around O-rings, washers and cartridge parts, the components that most often cause drips and stem leaks in kitchen faucets. Each pick is judged on how well its contents match common repair jobs, how clearly the kit is labeled, how many sizes it covers, and how useful it is for a single-handle faucet versus a general plumbing fix. Use the comparison and buying guide to narrow your choice before you order.

Our Top Picks

Quick Comparison

Product	Best for	Key feature
Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970)	Single-handle Delta-style kitchen faucets	Brass cartridge-style replacement part
360 Pcs O Ring Assortment Kit, Rubber Washer Orings, Black 24 Sizes	Matching an unknown O-ring size	360 pieces across 24 sizes
NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit & O-Rings	General plumbing repairs with a pick tool	1,075 pieces, 37 sizes, pick hook included
37 Sizes 1075Pcs 3-in-1 Home Universal Rubber Washers Assortment Kit	Households with several leak points	1,075 pieces, 37 sizes, pick hook included
XBVV 106 PCS Faucet Washer Assortment Kit	Outdoor spigots and hose connections	Flat and beveled rubber washers
XBVV 37 Size 1075 Pcs Faucet Washers & O-Rings Kit	Broad coverage for basic leak fixes	1,075 pieces, 37 sizes, pick hook included

Danco Cartridge Repair Kit for Delta Single-Handle Faucet, Brass (86970)

Best for: Repairing a dripping or stiff single-handle kitchen faucet of the Delta type.

This is the most targeted option on the list. Rather than a general assortment, it is a replacement cartridge designed for a specific faucet family. If your kitchen faucet drips from the spout even when the handle is off, the cartridge is the usual culprit, and swapping the whole cartridge is often quicker than sorting through loose washers.

Key specs

• Designed as a cartridge replacement for Delta single-handle faucets
• Brass and plastic cartridge construction, per the listing name
• Sold as a single repair part rather than a multi-size assortment

Pros

• Addresses the most common cause of drips in single-handle faucets
• No guesswork about individual washer sizes
• Faster to install than rebuilding a stem from loose parts

Cons

• Only useful if your faucet matches the cartridge type
• Offers nothing for pipes, hoses or other fixtures

Bottom line: Best for homeowners who have confirmed their kitchen faucet is a Delta single-handle model and want a direct replacement part.

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360 Pcs O Ring Assortment Kit, Rubber Washer Orings, Black 24 Sizes

Best for: Matching an unknown O-ring size when a leak traces back to a worn seal.

This kit suits anyone who has pulled an old O-ring and cannot read its size. With 360 pieces across 24 sizes, you can try several candidates before reassembling the faucet. Its listing points to faucet and plumbing use, but the O-ring format is broadly common in fittings of this kind.

Key specs

• 360 pieces total
• 24 O-ring sizes
• Black rubber O-rings

Pros

• Large selection makes size matching far easier
• Useful for several fixtures in one household
• Inexpensive way to keep spares on hand

Cons

• Not every size will fit a given faucet, so trial fitting takes time
• Contains no pick tool or washers

Bottom line: A good fit for DIYers who need a spread of O-ring sizes to find an exact match.

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NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit & O-Rings

Best for: General plumbing repairs where the leak source is not yet known.

A broader kit that combines O-rings, washers and gaskets, this option suits people who want one box for several fixes around the sink. The inclusion of a pick hook is useful for lifting old seals out of tight channels without scratching the housing.

Key specs

• 1,075 pieces across 37 sizes
• Three part types: O-rings, washers and gaskets
• Includes a pick hook

Pros

• Covers faucets, hoses and spigots in one kit
• Pick hook helps remove stubborn old seals
• Large count reduces repeat orders

Cons

• Many sizes will go unused in a single repair
• Storage case organization is less important than contents, so sorting takes effort

Bottom line: Suited to a home that handles many small plumbing jobs and wants one assortment on the shelf.

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37 Sizes 1075Pcs 3-in-1 Home Universal Rubber Washers Assortment Kit

Best for: Households with several leak points across kitchen, bath and outdoor fixtures.

This kit matches the same 37-size, 1,075-piece format as the NBRINGO option but is marketed as a household assortment. It is a practical choice when multiple fixtures leak and you want to avoid buying separate repair kits for each.

Key specs

• 1,075 pieces across 37 sizes
• Rubber washers, O-rings and gaskets
• Includes a pick hook

Pros

• One kit covers several fixture types
• Pick hook included for seal removal
• Good value for shared household maintenance

Cons

• Requires sorting before use, as many sizes look similar
• Not a substitute for a manufacturer cartridge when one is needed

Bottom line: A strong choice for a household that wants a single backup assortment for multiple leak sources.

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XBVV 106 PCS Faucet Washer Assortment Kit with Assorted Flat and Beveled Rubber Washers

Best for: Outdoor spigots, hose connections and garden faucet stems.

This kit focuses on flat and beveled rubber washers, the parts that typically wear out on a dripping outdoor tap. It is less suited to indoor kitchen cartridges but useful if the sink is near an exterior connection or you maintain garden fixtures too.

Key specs

• 106 pieces
• Assorted flat and beveled rubber washers
• Intended for garden faucet stem repairs

Pros

• Right washer types for common stem leaks
• Compact count is easier to sort than larger kits
• Useful for outdoor and utility fixtures

Cons

• Lacks O-rings and cartridge parts for kitchen faucets
• Limited for indoor single-handle repairs

Bottom line: Best for owners who maintain outdoor taps and want washers matched to garden faucet stems.

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XBVV 37 Size 1075 Pcs Faucet Washers & O-Rings Kit & Plumbing Gasket

Best for: Basic leak fixes where you want broad coverage at a budget-friendly level.

This assortment shares the 37-size, 1,075-piece format with the other large kits, making it a sensible option for a general repair drawer. It leans toward value and breadth rather than a specific faucet model.

Key specs

• 1,075 pieces across 37 sizes
• Faucet washers, O-rings and plumbing gaskets
• Includes a pick hook

Pros

• Broad size coverage for unknown parts
• Pick hook assists with removal
• Budget-friendly way to stock common replacements

Cons

• Generic parts may not seal as well as a matched cartridge
• Requires patience to find the right size

Bottom line: A practical budget pick for someone building a general repair stock rather than fixing one specific faucet.

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Buying Guide

Identify the faucet type first

Single-handle and two-handle kitchen faucets use different internal parts. A single-handle faucet usually relies on a cartridge or ball assembly, while a two-handle model often uses compression stems with rubber washers. Check the brand and model stamped on the faucet body or under the spout, then match your kit to that design before ordering.

Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet, XBVV 106 PCS Faucet Washer Assortment Kit

Check O-ring and washer sizes

Sizes are usually given as inside diameter by cross-section, in fractions of an inch or in metric. Remove the old part, measure it with calipers if you have them, and compare against the chart in the kit. Many failed repairs come from installing a part that is close but not exact.

Good picks for this: 360 Pcs O Ring Assortment Kit, 37 Sizes 1075Pcs 3-in-1 Home Universal Rubber Washers Assortment Kit

Count the pieces versus what you need

A count of several hundred pieces covers many repairs, but a single kitchen leak may need only two or three parts. Larger kits are efficient if you maintain several fixtures; smaller, targeted kits reduce clutter and sorting time if you handle one faucet.

Good picks for this: NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit, XBVV 37 Size 1075 Pcs Faucet Washers & O-Rings Kit

Look for a pick tool

Removing old seals from narrow grooves is difficult with fingers alone and can scratch brass or plastic housings. A pick hook makes removal easier and lowers the chance of damaging the seat that the new seal must sit against.

Good picks for this: NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit, XBVV 37 Size 1075 Pcs Faucet Washers & O-Rings Kit

Match the material to the water and use

Rubber and silicone seals respond differently to heat, chlorine and mineral content. Brass and plastic cartridge parts are common in kitchen faucets. Check what the listing says about materials and avoid using a generic seal where a manufacturer material is specified.

Good picks for this: Danco Cartridge Repair Kit for Delta Single-Handle Faucet, 360 Pcs O Ring Assortment Kit

Consider the other fixtures in your home

If the same washers and gaskets will serve outdoor spigots, hoses or bathroom faucets, a broader kit saves money over time. If the kit is only for the kitchen, a focused product avoids buying parts you will never use. Owners often report that a single assortment ends up being a repeat purchase across several fixtures.

Good picks for this: 37 Sizes 1075Pcs 3-in-1 Home Universal Rubber Washers Assortment Kit, XBVV 106 PCS Faucet Washer Assortment Kit

Plan for storage and reordering

Keep the kit in a dry, labeled container and record which sizes you used. Rubber parts can harden over years in heat or direct sunlight. A kit with clear size labeling saves time on future repairs and reduces the chance of mixing up similar-looking parts.

Good picks for this: 360 Pcs O Ring Assortment Kit, NBRINGO 1075 PCS 37 Sizes 3-in-1 Universal Plumbing Repair Kit

FAQ

What is included in a kitchen sink faucet repair kit?

Most kits contain some combination of O-rings, rubber washers, gaskets and sometimes a pick tool. Single-handle kits may also include a cartridge or ball-assembly part. Read the piece count and size chart before ordering.

How do I know which repair kit fits my faucet?

Identify the brand and model, and whether the faucet is single-handle or two-handle. A brand-specific cartridge kit is the surest match. For general kits, compare the sizes you pull from the faucet against the size chart.

Can one assortment kit fix every faucet in the house?

Often it can cover basic washer and O-ring replacements across several fixtures. It cannot replace a matched cartridge for a specific model, so keep a brand-specific part for faucets with cartridges.

Why does my kitchen faucet still drip after replacing the washer?

The valve seat may be worn or pitted, or the cartridge may be the real source. Inspect the seat for damage and consider replacing the cartridge. If the problem persists, a plumber can assess the valve.

Do I need to shut off the water before a repair?

Yes. Turn off the shutoff valves under the sink and open the faucet to relieve pressure before disassembling any part. Work over a towel or basin to catch small parts.

How long do rubber faucet parts last?

Lifespan depends on water quality, heat exposure and how often the faucet is used. Replacing worn seals when a drip first appears prevents damage to the valve seat. Manufacturers generally recommend inspecting internal parts periodically rather than on a fixed schedule.

When should I call a professional?

If you find cracked housings, corroded valve seats, or if water continues to leak after two repair attempts, consult a licensed plumber. Gas or main-line work should always be handled by a professional.

Conclusion

For a single-handle Delta-style kitchen faucet, the Danco cartridge kit is the most direct fix. If you need to identify an unknown O-ring size, the 360-piece O-ring assortment is the most useful. Households that handle several plumbing jobs will get the most from the large 3-in-1 assortments, while the outdoor-focused washer kit suits garden spigots. The budget assortment works well for a general repair drawer. Match the kit to your faucet type first, then to your need for size variety.

Sources

• Guidance on water conservation and identifying household leaks (epa.gov)
• Safety information on home repair and tool use (cpsc.gov)
• Standards and certification information for drinking water system components (nsf.org)

Related reading

• Bathroom Sink Faucet Drip Repair: 5 Best Kits for Every Fix (2026)
• Price Pfister Kitchen Faucet Repair: A Step-by-Step Guide (2026)
• Moen Kitchen Faucet Tighten Handle: 4 Best Repair Parts Compared (2026)
• Kitchen Faucet Replacement Parts Price Pfister: 6 Best Picks for Easy Repairs
• Bathroom Leaky Faucet Repair Kits: 7 Best Picks Compared (2026)

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