Presto 09936 Sealing Ring with Air Vent, 6 Quart

What the maker puts in writing

• “Pressure Cooker Sealing Ring”
• “Black”
• “6 Quarts”
• “Operation Mode Automatic”
• “Is Dishwasher Safe No”
• Description: “Pressure Cooker Sealing Ring With Automatic Air Vent, For Models 01260, 01340, 01360.”
• Reference 09936 · Catalog: 45 g (1.6 oz), 10 × 12 × 0.51 in (254 × 305 × 13 mm)

The ring carries an overpressure device

“Pressure Cooker Sealing Ring With Automatic Air Vent.”

This is the only part on this shelf that is a safety component as well as a seal, and it changes how you should think about replacing it.

A pressure cooker needs two separate things. A regulator that holds the working pressure — the weight or spring on the lid. And a last-resort release that opens if the regulator is blocked.

On Presto cookers of this generation the second one is a plug seated in the gasket. If pressure rises beyond the regulator’s range, it lets go and vents through the lid.

It also does a second job on the way up: it seals the vent pipe once air has been displaced by steam, which is what bullet four’s “Operation Mode Automatic” refers to.

Why that matters at purchase. On the other five rings here you are replacing rubber. Here you are replacing rubber and a pressure-relief part — so the usual temptation to run an old gasket one more season carries a different kind of cost.

And it cuts the other way. At $19.28 this is dearer than three of the six rings on this shelf, and part of what you are paying for is a component none of the others includes. Per gram it is about 43 cents, second only to the tiny Hawkins at 73 — against the Prestige Junior’s 20, the Prestige Senior’s 23 and the T-fal Clipso’s 34.

Three model numbers, and nothing else to go on

“For Models 01260, 01340, 01360”, plus bullet three: “6 Quarts.”

That is the whole of the identification. No diameter, no material, no body finish.

And a capacity alone will not do it. Presto has made a great many 6-quart cookers over several decades, and the ring that carries an air vent fits only lids built to take one.

So read the number off your own cooker — on a Presto it is usually stamped or printed on the underside of the body — and match it to those three.

The shelf, ranked by how well each answers this question:

Prestige Junior, $8.94 — three capacities, “Only” twice, and “Does not work with other brands or models” as a bullet of its own Hawkins, $7.33 — three named models plus the height class, “2-4 Liter Tall” T-fal Secure 5, $23.15 — two machine numbers, P2510737 and P2514437 this — three model codes T-fal Clipso, $24.01 — P45007 in a bullet, P4507 in the description Prestige Senior, $16.01 — three different capacity lists on one page

And the universal fallback is a tape measure. Lay it across the groove inside your lid, outer edge to outer edge. The one listing here that publishes a diameter — the Prestige Senior at 10.5 inches — has a catalog figure of 267 mm, which is 10.5 inches exactly. So the measurement is the reliable test, and the catalog figures on this shelf are readable when the ring ships flat.

This ring’s catalog footprint is 10 × 12 inches — rectangular, so a box rather than a flat ring. Its 45 grams places it between the Prestige Junior’s 44 g (4–6 liters) and the Prestige Senior’s 70 g (7.5–13 liters), which is where a 6-quart ring belongs.

Not dishwasher safe, which nothing else here tells you

“Is Dishwasher Safe No.”

The only dishwasher statement on this shelf, and the only one anywhere in this category that answers the question people actually ask.

What a dishwasher does to a ring. A sealing ring is an elastomer whose whole job is to stay soft and deform. A dishwasher cycle combines a sustained high temperature with a strongly alkaline detergent, and alkaline attack is what hardens and swells rubber — the same chemistry that eventually makes any gasket too stiff to compensate for the uneven gap between a lid and a body.

Add that this ring carries an air vent, a small moving part with a seat, and a dishwasher is the wrong place for it twice over.

So: hand-wash in warm water, dry it, and store it out of the lid.

That last part is the habit no listing on this shelf mentions, and it prevents the second failure mode. A ring left compressed in a closed lid for months takes a permanent flat on one side and then leaks there whatever you do. Storing the lid inverted on the body costs nothing.

And the thing that usually prompts replacement before any leak is the one the two Prestige pages name and this one does not: “It does not impart any color, taste or odor to the food.” A ring that has cooked spiced food for a year smells of it permanently and passes that on to everything after. Rubber absorbs and does not release — and this page does not say what the ring is made of.

Four bullets of one word

“Pressure Cooker Sealing Ring.” “Black.” “6 Quarts.” “Operation Mode Automatic.” “Is Dishwasher Safe No.”

Five bullets, and three of them are a phrase or a word. The page is a specification table rendered as a list, with the one genuinely important fact — the air vent — left to the description.

Which is a strange ordering, because the vent is the only thing that distinguishes this from a plain ring, and it is the reason the price is what it is.

What the better pages on this shelf do with the same space: the Hawkins spends a sentence explaining where the ring sits and what it does — “fits around the inside rim of the cover and forms a pressure-tight seal between the cover and the body”. The Prestige pair explain the material and why it works — “the best rubber and is self compensating… does not impart any color, taste or odor”. The Prestige Junior spends three of five bullets making its fitment unmistakable.

Two of this page’s five bullets carry real information — the capacity and the dishwasher answer — and both are useful. It is simply a thin page for the third most expensive ring on the shelf.

“Amazon Brand - Presto!” in the title is worth one note: it reads as a Presto part sold under an Amazon listing rather than a third-party copy, and the reference 09936 is a Presto-format number. Two listings on this shelf claim to be genuine outright — the Prestige Junior (“Genuine Prestige Gasket”) and the Hawkins (“Genuine Hawkins”).

Which matters on this part more than most. A gasket works by being the wrong size: its section is deliberately slightly too large for its groove, so that squeezing it closes the gap. A ring half a millimeter over will seat, hold, and then extrude out of the groove under pressure. On a ring that also carries a relief valve, an approximate fit is the wrong economy at any price.

What is not published

No material. The T-fal Clipso publishes silicone; the two Prestige rings publish rubber, “self compensating”. This, the Hawkins and the T-fal Secure 5 publish nothing — and the difference is real: silicone survives more heat cycles before hardening, rubber seals better cold and costs less.

No diameter, as above.

No country of manufacture, where the Prestige pair and the Hawkins all say “Made in India”.

No air vent specification. This is the omission that follows from the strongest feature on the page: the vent is a pressure-relief part, and nothing is published about the pressure at which it releases, nor whether it can be inspected or replaced separately. On a safety component that is the figure you would want.

No replacement interval. Not at least one of the eight listings on this shelf publishes one — and it matters most here, because this ring carries a safety device. The failure is gradual: a cooker that takes noticeably longer to come up to pressure than it did when new has a gasket that is finished. Cracks, flat spots and a glazed surface are the visual signs.

No quantity, and a wear part is the obvious thing to buy two of.

No temperature or pressure rating, which nothing on this shelf publishes.

Availability

Read on the day this page was built: $19.28 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.