Medical grade silicone cock ring in black measuring 40MM diameter for enhanced sessions
Key Features:
Premium medical-grade silicone construction
40mm diameter with 3x stretch capability
Enhances blood flow restriction
Supports prolonged sexual performance
Comfortable and body-safe design
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Struggling to maintain firm erections or extend stamina? The Boneyard Silicone Ring Black 40MM uses medical-grade silicone and precise blood flow restriction to deliver longer-lasting hardness and control, with a no-roll design that stays put during activity.
The Boneyard Silicone Ring Black 40MM is a blood-flow restriction ring engineered to maintain firmer, longer-lasting erections. Made from 100% medical-grade silicone, it delivers a hypoallergenic, body-safe experience with exceptional durability. Its 40mm diameter accommodates most penis sizes, while the innovative no-roll structure ensures the ring stays in position during sexual activity without unwanted movement or discomfort.
What sets this ring apart is its combination of practical design and reliable performance. The 3x stretch capacity gives you flexibility in fit, while the medical-grade silicone resists degradation and maintains its shape over time. See the full BDSM Australia range of Stretchy Cock Rings to explore other options.
Begin by stretching the ring wide open with both hands. Carefully slide it over your penis and testicles, positioning it just below the base of the testicles for maximum blood flow restriction. Adjust the fit until it feels snug but not painfully tight—you should be able to fit one finger underneath comfortably. Start with shorter wear times of 15–20 minutes and gradually increase duration as your body adapts to the sensation.
During sexual activity, the ring maintains your erection by restricting blood outflow, intensifying sensation and extending stamina. You can wear it during masturbation, partnered sex, or combine it with other toys for heightened control. For added intensity, explore Spiked Cock Cages if you want to layer sensations. Always remove the ring immediately if you experience numbness, discoloration, or pain.
Wash the ring with mild soap and warm water immediately after use. Pat dry with a soft cloth and allow it to air dry completely before storage. Keep it in a cool, dry place away from direct sunlight and heat sources. Store separately from other silicone toys to prevent material degradation. Avoid silicone-based lubricants, which can degrade the material over time.
Understanding how cock rings work helps you get the most from your experience. Blood flow restriction is a straightforward principle with measurable effects on erection quality and stamina. Read more about the mechanics and benefits of different ring styles in our guide to Magnetic Cock Rings.
This Boneyard ring is a powerful control tool in my practice. I use it to heighten my submissives' awareness and anchor their focus entirely on my commands. The no-roll design means it stays precisely where I position it, allowing me to maintain consistent restriction throughout a scene. Watching their physical response—the subtle trembling, the change in breathing—tells me exactly how deep their submission has gone.
Blood flow restriction creates a profound psychological shift in my submissives. By controlling their physical state, I control their mental state. Some sink into a trance-like surrender; others become desperate and pleading. Each reaction teaches me more about their limits and vulnerabilities. The ring becomes invisible to them after a few minutes—they stop noticing the object itself and focus entirely on the sensations and my authority.
I strategically use this ring during edge play and denial scenes. Hours of maintained arousal without release builds psychological tension that makes them acutely obedient. The medical-grade silicone ensures comfort during extended wear, which means I can push their endurance further. Removing the ring at the moment of release intensifies their orgasm dramatically—a reward calibrated precisely to reinforce the power dynamic I've established.
See this and similar tools in action across my 300+ training videos on the BDSM Australia channel.
| Feature | Boneyard Silicone Ring Black 40MM | Standard rubber cock ring | Metal tension ring |
|---|---|---|---|
| Material | Medical-grade silicone | Natural rubber | Stainless steel |
| Stretch range | 40–120mm (3x stretch) | Limited stretch, fixed sizes | Non-stretching, fixed diameter |
| Comfort for extended wear | Excellent; soft, flexible material | Good; can degrade with age | Firm; may feel rigid over time |
| Ease of cleaning | Simple soap and water; non-porous | Requires careful drying to prevent mildew | Dishwasher safe; very durable |
Grab the Boneyard Silicone Ring Black 40MM for reliable blood flow restriction and extended erection control. The medical-grade silicone feels comfortable against your skin, the 3x stretch adapts to your body, and the no-roll design keeps everything in place at BDSM Australia. Whether you're exploring cock rings for the first time or refining your technique, this ring delivers consistent performance and genuine results. Quality Bondage Gear Without the Guesswork.
BDSM Australia ships with Australia Post. We ship from Sydney.
All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 1-6 business days after shipping, but may subject to any postage carrier related delays beyond our control.
Free standard shipping on orders shipped within Australia above $200. For orders below $200 standard shipping within Australia is $12.95 and will be added at checkout.
Orders addressed to P.O box, G.P.O box or Parcel Collect will be handled by Australia Post. Extra time should be allocated for these orders.
Shipping Transit Times (Including Free Shipping)
Shipping time refers to the estimated time that it will take to deliver your order after it’s ready to ship (Please note this does not include time to process your order). Shipping time does not commence after your order is put through but begins the moment your order has been processed and is ready to dispatch via the our freight carrier..
1. Major City & Metro Areas (within Australia)
All in stock orders are generally processed on the same day the order was placed on business days for orders received before 12pm. Generally, orders are processed and shipped the same day or next business day.
Orders are typically received 1-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.
If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the nearest depot location.
2. Rural Areas (within Australia)
All orders are generally processed on the same day the order was placed on business days before 12pm.
Generally, orders are processed and shipped the same day or next Business day.
Packages below 2kg are usually received 3-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.
If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the local Australia Post depot.
International Shipping
The price for international shipping is AU$12.95 for orders equal to or below 0.399kg (399grams), and AU$22.95 for orders with a total weight equal to or above 0.4kg (400 grams).
All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 6-30 business days after shipping.
If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from your nearest delivery depot.
Please note in regards to all orders
– These expected delivery dates/times are based on carrier shipping practices, your destination, and the items in your order.
– Expected delivery dates are estimates. Orders can be delayed due to fraud verification or the time of the order being placed. Items that are not regularly stocked cannot be held to the expected delivery dates.
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We have a 14 day return policy, which means you have 14 days after receiving your item to request a refund for any defective products.
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Refunds
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