Choosing a replacement part in the seals gaskets o rings category can feel straightforward until you compare a blender gasket, an air-rifle o-ring, and a pressure-cooker ring side by side. They all stop leaks, but they are built for completely different machines. You might be fixing a jar that leaks from the base, a CO2 piercing cap that loses gas, or a pressure cooker that will not hold steam. The four replacements here span $5.75 to $13.12, and the right pick depends on which device you are repairing.
Quick Take
The Hamilton Beach 2 Pack Blender Replacement Rubber Plastic Gasket Ring Seals is a two-pack of flat washers for the cutter-to-jar seal on Hamilton Beach blenders, priced at $6.99. The 3PCS Gasket Seal Rings for NutriBullet 600W 900W Blender Replacement Parts costs $5.99 and includes three silicone rings for 600W and 900W NutriBullet-style cups. The QB78, QB78D, XS78, TH78 Piercing Cap & Valve TWO (2) O-Ring Seals URETHANE comes in at $5.75 and is an o-ring seal kit for the 78-series air-rifle piercing cap. The Pressure Cooker Sealing Ring Replacement Gasket, Replacement Practical Cooking is the only cooker-specific ring and the most expensive at $13.12.
Listed Price Comparison
All prices are listed in USD.
| Replacement Part | Price | Bar |
|---|---|---|
| Hamilton Beach 2 Pack Blender Gasket Ring Seals | $6.99 | |
| NutriBullet 3 Piece Gasket Seal Rings (600W/900W) | $5.99 | |
| QB78 Piercing Cap & Valve O-Ring Seals (2 Pack) | $5.75 | |
| Pressure Cooker Sealing Ring Replacement Gasket | $13.12 |
Decision Matrix
Use this table to narrow down the choice before reading the detailed notes.
| Seal | Best For | Consideration |
|---|---|---|
| Hamilton Beach 2 Pack Blender Gasket Ring Seals | Hamilton Beach blender jars | Confirm the washer dimensions fit your cutter base |
| NutriBullet 3 Piece Gasket Seal Rings | NutriBullet 600W and 900W blade assemblies | Check the ring size against your specific cup and blade base |
| QB78 Piercing Cap and Valve O-Rings | QB78, QB78 Deluxe, TH78, XS78 CO2 piercing caps | Built for the 78-series, not a general kitchen seal |
| Pressure Cooker Sealing Ring | Pressure cookers that need an airtight lid | Match the ring to your cooker lid diameter |
Product Notes
Hamilton Beach 2 Pack Blender Replacement Rubber Plastic Gasket Ring Seals
The flat gasket in this two-pack is the washer that sits between the cutter and the jar on Hamilton Beach blenders. The dimensions are 1.875 inches inside diameter and 2.68 inches outside diameter, giving you a clear way to compare it with the old seal before you install it. The set also covers commercial models such as 908 and 909, so it is a useful spare for more than one machine. The trade-off is that this is a Hamilton Beach-sized washer; if your jar uses a different base, the dimensions are the detail to check.
3PCS Gasket Seal Rings for NutriBullet 600W 900W Blender Replacement Parts
These three rings are made from food-grade silicone rubber that is BPA-free and non-toxic, which makes them a sensible swap for worn seals in NutriBullet 600W and 900W blades. They are flexible, wear-resistant, and easy to clean, so a leaking cup can often be fixed by replacing the ring. The size and style of your cup still need to match the rings, because wattage alone does not guarantee a compatible blade base. If you own a supported NutriBullet model, the three-pack leaves you with extras for the next time.
QB78, QB78D, XS78, TH78 Piercing Cap & Valve TWO (2) O-Ring Seals URETHANE
These two seals are made for the piercing cap and valve on QB78, QB78 Deluxe, TH78, XS78, and other 78-series air rifles that use a CO2 piercing tube. Urethane gives them strength, tear resistance, and abrasion resistance, which is a practical fit for a part that holds pressure. The two seals are identical and interchangeable, so you do not need to worry about which o-ring goes where. Its narrow purpose is the limitation: this is an air-rifle part, not a general-purpose kitchen gasket.
Pressure Cooker Sealing Ring Replacement Gasket, Replacement Practical Cooking
This silicone ring is sold as a replacement sealing gasket for pressure cookers and is described as food-grade, heat resistant, and leakproof. It sits between the lid and pot to help the cooker stay airtight while steam builds inside. Because this is a general pressure cooker sealing ring, matching it to your cooker lid diameter is the critical step. The portable size means you can take it along when you travel.
Final Recommendation by Use Case
- For a Hamilton Beach blender: The Hamilton Beach 2 Pack Blender Replacement Rubber Plastic Gasket Ring Seals is the direct replacement for the flat washer between the cutter and jar. Compare the 1.875-inch inside diameter with your current gasket before you order.
- For a NutriBullet 600W or 900W: The 3PCS Gasket Seal Rings for NutriBullet 600W 900W Blender Replacement Parts offers silicone rings with the flexible, easy-to-clean performance you want in a blender seal.
- For a QB78-family air rifle: The QB78, QB78D, XS78, TH78 Piercing Cap & Valve TWO (2) O-Ring Seals URETHANE is the two-seal kit designed for the piercing cap and valve, and urethane's strength and abrasion resistance fit that job.
- For a pressure cooker: The Pressure Cooker Sealing Ring Replacement Gasket, Replacement Practical Cooking is the cooker-specific silicone ring, and it is the highest listed price of the four.
No matter which one you choose, the common thread is matching the material and dimensions to the machine before you replace the seal.
