If not, it's then your call... Either source a larger d'nut, or else run a large bead of silicone around both surfaces of t'nut...

USE IT ANYWHERE - This convenient donut cushion for pressure relief can be used as a discreet ergonomic sitting aid when travelling, in the office, the car, for wheelchair use, or at home watching TV. ORTHOPAEDIC DOCTOR RECOMMENDED: Ladies' pressure relief cushion is recommended by orthopaedic surgeons, chiropractors and medical professionals. To relieve issues related to the coccyx, such as hemaorrhoids, cyst pressure, ulcers, bed sores, and more LIFE CHANGING: Our memory foam cushions for chairs has made life changing effects an effective doughnut cushion can have on those that suffer with bottom pain. The perfect ring cushions for pressure relief to ease any discomfort If you fail to return any VAT exemption forms to us we WILL charge your card for the outstanding VAT. FOR EVERYONE - Covered in a machine washable fabric, our ring cushions for pressure relief are available in large and standard sizes and are recommended for weights up to 198lbs.Ergonomically Designed for Maximum Comfort and Support – Carefully considered dimensions (17.5 x 14 x 2.5 inches) and medical foam cushion firmness have been engineered to provide you the perfect butt cushion for alleviating painful conditions while remaining durable and supportive as a post surgery cushion. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Stop Suffering From Painful and Debilitating Conditions – Give yourself a simple, natural and effective way to relieve pain. Donut cushions are recommended by doctors and physiotherapists worldwide for effective relief when sitting.

with a physical or mental impairment which has a long-term and substantial adverse effect upon his/her ability to carry out everyday activities; Purple, the company known for its mattresses, also makes seat cushions. Like their mattresses, the cushions are made with their Purple Grid material, a hyper-elastic polymer that is designed to be breathable, pressure-relieving, and durable. Company reputation and transparency: We vetted each company and product, and made sure there were no Food and Drug Administration (FDA) warnings, class action lawsuits against the company, or recalls, among other criteria. We do NOT decide if an item is or isn’t exempt & we don’t make any more or less money if we charge you VAT or we don’t charge you VAT.EVA is also waterproof and easily washable, making this a solid choice for camping or other outdoor activities.

First try Kiaro's idea of turning t'd'nut t'other way around - see if the larger surface now seals against the pan. Daneshmandi H, et al. (2017). Adverse effects of prolonged sitting behavior on the general health of office workers. Features: I included multiple sizes, a variety of firmness and support levels, different materials, and various price points. So, I am something of a self-appointed expert when it comes to pain-relieving seat cushions. Here’s how I rounded up the products on this list: It does sound as tho' you have done it all correctly, so it probably comes down to the doughnut not being large enough for your particular cistern.Portable and Lightweight – Use in your home office as a desk chair cushion, on the road as a car seat cushion or as a wheelchair cushion. Adequately supports weights up to 100kg (16 stone). Ok, if there is even a teeny tiny gap, water will puish out so it might not be as bad a gap as you think - is there any way to tell what gap you need to 'fill'? INNOVATIVE FEMALE DESIGN: To give the most comfortable long term sitting experience possible, the iMedic donut pillow is designed with 3 contours. One for coccyx comfort and 2 leg contours to ensure proper blood circulation and no cramping Personal experience: Since I’ve tried multiple seat cushions, I included a few of my tried-and-true favorites. Not all of our products are eligible for VAT relief, so we are obliged to charge VAT for those products even after you complete this form.