Replacement Parts Lids for Ninja Blender 3.35in Sip & Seal Lids - Fit

In this review of the replacement lids for Ninja single-serve cups, the bottom line is practical: these sip-and-seal lids are a straightforward, low-cost option for anyone who needs a direct lid replacement for 12oz, 18oz, 24oz, or 32oz Ninja cups. The reviewer found they match the look and basic function of the original lids, making them useful for everyday blending and carry; however, fit and leak resistance vary by cup and blade configuration, so shoppers should check the cup OD of 3.35in before ordering.

Key Features

• Wide compatibility: Designed to fit many Nutri Ninja and Ninja Auto-iQ models, so users with older or varied units can replace worn lids without buying new cups.
• Correct diameter: The 3.35in outside diameter is specified to match the intended 12oz through 32oz Ninja cups, which prevents ordering the wrong size if you measure first.
• Sip-and-seal design: The flip-top sip mechanism lets you drink directly from the cup and helps reduce spills during transport when it seats properly.
• Dishwasher safe: The lids clean easily on the top rack, making maintenance simple for daily users.
• Two-pack convenience: The package includes two lids, so you get a spare for rotation or replacement right away.

Who It's For

This product suits owners of Nutri Ninja and Ninja single-serve blenders who need an inexpensive replacement for missing or damaged lids on 12oz, 18oz, 24oz, or 32oz cups. It is a practical pick for households that use their single-serve cups daily and want a dishwasher-safe lid that looks and functions like the original.

Those who should look elsewhere include owners of 16oz Ninja cups or users who require guaranteed leakproof performance for long travel; a precise fit depends on matching the 3.35in OD and on the specific cup and blade combination, so measure before buying.

Pros & Cons

Pros

• Matches original lids in appearance and basic function for most compatible Ninja cups.
• Includes two lids, offering immediate backup or replacement.
• Dishwasher-safe material makes cleanup easy for regular use.

Cons

• Fit and leak resistance are mixed for some users; not all cups seal identically and they do not fit 16oz cups.

Specifications

Brand	joyparts
Compatible models	Selected Nutri Ninja and Ninja Auto-iQ single-serve models listed by manufacturer
Fits cup sizes	12oz, 18oz, 24oz, 32oz only
Outside diameter	3.35in
Package contents	2 replacement lids
Care	Dishwasher safe (top rack recommended)

Our Verdict

These replacement sip-and-seal lids are a sensible, cost-effective fix for users who need extra or replacement lids for compatible 12oz through 32oz Ninja cups. They deliver the expected convenience and dishwasher-safe cleaning, and they are good value if you confirm the 3.35in OD and accept that fit and leak performance can vary slightly by cup and blade type.

Frequently Asked Questions

Will these lids fit my Ninja 16oz cup?
No. These lids only fit 12oz, 18oz, 24oz, and 32oz Ninja cups and are not compatible with 16oz cups.

How do I know the lid will fit my cup?
Measure the outside diameter of your cup; the lids are made for a 3.35in OD and fit properly only if your cup matches that dimension.

Are the lids dishwasher safe?
Yes. The lids are described as dishwasher safe and are suitable for cleaning on the top rack.