9.5mm Grommet Flower Bowl

The 9.5mm Grommet Flower Bowl is a simple glass replacement bowl built for acrylic and plastic water pipes that use rubber grommet seals instead of ground glass joints. If you've got an older-style bong where the downstem slides through a rubber ring, this is the bowl that fits. Grab a few at this price point so you're never stuck without a backup when one inevitably rolls off the table or gets too gunked up to bother cleaning.

Key benefits

• Fits grommet-style downstems — the 9.5mm diameter slides right into rubber grommets on acrylic and plastic pipes without wrestling with joint sizes
• Glass construction — won't add plastic taste to your hits like cheap alternatives, and handles heat better than acrylic bowls
• Cheap enough to stock up — keep two or three in a drawer so you're covered when one breaks, disappears, or becomes a resin sculpture
• Standard bowl capacity — holds enough for a few solo sessions or passing around with friends
• No adapters needed — the rubber grommet does all the sealing work, so you just push it in and you're set

Best for

This bowl is specifically for people running acrylic or plastic bongs with rubber grommet seals. That includes most budget water pipes, older designs, and the kind of pipe you might have grabbed at a gas station or head shop years ago. If you're looking at your downstem and it passes through a rubber ring rather than fitting into a tapered glass joint, this is what you need.

Not for you if: your piece has a ground glass joint (10mm, 14mm, or 18mm). Those require bowls with matching tapered stems. The grommet style and glass joint style aren't interchangeable.

How it works

Grommet-style pipes seal using a rubber ring rather than the precision fit of ground glass joints. The bowl slides into this rubber grommet, which creates an airtight seal through compression. No grinding, no worrying about male versus female joints — just push it in until it's snug.

The 9.5mm diameter is the standard size for most grommet downstems. When you pull air through the pipe, the bowl stays in place because the rubber grips the glass. It's a simpler system than glass-on-glass, which is why it's common on budget pieces and older designs.

To use it, just slide the bowl into your downstem's grommet, pack your flower, light, and clear. When it's time to ash, pull the bowl out, dump it, and reload. The whole process is as straightforward as it gets.

Specifications

Fit and compatibility

This bowl works exclusively with rubber grommet setups. Before ordering, check how your downstem connects to your pipe. If the downstem passes through a rubber ring that creates the seal, you're good. If the downstem tapers and fits directly into a glass socket with no rubber involved, you have a ground glass joint and need a different bowl entirely.

Most glass bongs and water pipes made in the last decade use ground glass joints. Grommet-style is more common on acrylic pipes, plastic pieces, and older designs. When in doubt, measure the opening in your grommet — if it's around 9.5mm and made of rubber, this fits.

Care and cleaning

Let the bowl cool completely after use. For regular maintenance, soak it in isopropyl alcohol for 15-30 minutes, then rinse thoroughly with warm water and let it dry before your next session. A pipe cleaner or cotton swab helps with stubborn resin buildup inside the bowl.

Honestly, at this price point, plenty of people just replace them when they get too caked to clean easily. There's no shame in treating these as semi-disposable — that's kind of the point.

FAQ

Will this fit my 14mm bong?

No. This is for grommet-style pipes only. If your bong has a 14mm ground glass joint (where the bowl tapers into a glass socket), you need a 14mm male bowl instead. The 9.5mm measurement here refers to the diameter that fits into a rubber grommet, not a glass joint size.

How do I know if I have a grommet pipe or a glass joint pipe?

Look at where your downstem connects to the pipe. If there's a rubber ring creating the seal, that's a grommet setup and this bowl works. If the downstem fits directly into a tapered glass socket with no rubber, that's a ground glass joint and you need a different style bowl.

Is the bowl itself made of glass or plastic?

Glass. Even though it's designed for use with acrylic and plastic pipes, the bowl is actual glass. This means better heat resistance and no weird plastic taste affecting your flower.

How much flower does this bowl hold?

It's a standard-sized bowl — enough for 2-4 people to get a hit each, or a few solo sessions if you're packing light. Not a party bowl, not a one-hitter. Just a normal, functional size.

Can I use this with any glass bong?

Only if your glass bong happens to use a rubber grommet downstem, which is pretty rare. The vast majority of glass bongs use ground glass joints. If you're not sure, check your downstem connection — rubber ring means grommet, tapered glass socket means joint.

Does a screen come with it?

No. If you want to keep ash and small particles from pulling through, you'll need to grab screens or filters separately. Some people just pack their bowl with a slightly larger piece at the bottom to block the hole.

Why would I buy multiple?

Because they break. Or get lost. Or get so resin-caked you'd rather just grab a fresh one than spend time cleaning. Having a couple spares means you're never stuck without a bowl when you need one. At this price, stocking up just makes sense.