SSND-RIPPLE 6-18 large black silicone urethral sound shown horizontally on a white background with 1"x1" blue grid squares from Screenshot 2026-07-02 154307.jpg, showcasing its three massive expanding wave ripples peaking at 18mm, 8-inch insertable length, and thick safety flared base.
SSND-RIPPLE model, 6-18mm (18-54Fr) diameter range, wavy ripple design, 8" insertable, three expanding sections, flexible, retention valley, safety flared base, silicone
SSND-RIPPLE model, 6-18mm (18-54Fr) diameter range, wavy ripple design, 8" insertable, three expanding sections, flexible, retention valley, safety flared base, silicone

SSND-RIPPLE 6-18

Regular price$41.50
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Color

The SSND-RIPPLE 6-18 is a heavy-gauge, three-wave sound for a smooth, undulating stretch rather than sharp ribbed texture — a slim 6mm tip opening into three broad swells, each peaking above 17mm before dropping into a valley.

Details

  • Total length: 8.5"
  • Insertable depth: 7.75" (197 mm)
  • Entry tip: 6.0 mm (18 Fr)

Dimension table

Feature mm Fr
Smooth entry tip 6.0 mm 18 Fr
1st wave crest 17.5 mm 52.5 Fr
1st valley 13.25 mm 40.0 Fr
2nd wave crest (peak) 18.0 mm 54.0 Fr
2nd valley 12.75 mm 38.3 Fr
3rd wave crest 17.75 mm 53.3 Fr
Retention valley 13.75 mm 41.3 Fr
Safety base flange 17.25 mm
(non-insertable)
51.8 Fr

How it works

The slim 6mm tip enters easily, then rapidly tapers up to a 17.5mm crest before dropping into a 13.25mm valley. The second wave reaches the 18mm peak diameter before easing into a 12.75mm valley, and the third wave climbs back to 17.75mm before settling into the final 13.75mm retention valley, just ahead of the 17.25mm base flange.

Choosing your silicone firmness

Bob recommends #00-50 (Soft) — it lets the 17.5–18mm wave crests compress under muscle pressure, which keeps a piece this large from feeling fatiguing.

Color options

#18 and #30 are available in pure translucent silicone.
#00-20, #00-50, and #10 use a translucent white base and can be mixed with our standard colors.

Please note

This is strictly an advanced piece, recommended only for users who have already mastered large-diameter stretching and can safely accommodate an 18mm peak.
Use appropriate lubrication and never force insertion. Stop immediately if you experience pain, bleeding, or significant discomfort. Inspect the sound before each use and do not use it if damaged.

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S
Steve

Love using this silicone sound, it's excellent how it's made and with plenty of lube it slides right in with some effort. When I started sounding I thought I'd be able to use a 18mm, feels great!