Silicone vs Latex Pessary: Complete Material Guide (2026)

If your gynecologist mentioned there are two types of pessary material — silicone and latex — you may wonder which is better and why. This 2026 material guide covers the real differences: allergy risk, durability, insurance coding, cleaning, comfort, and why modern American medicine has almost entirely moved to silicone.

Quick answer

Silicone is objectively better than latex for pessaries. It's non-allergenic, non-porous, doesn't absorb odor, lasts 1-2 years vs 6-12 months for latex, is autoclavable for clinical reuse, and has the correct current HCPCS code (A4562). Latex pessaries are the historical option that most US clinicians no longer stock. Unless you have a specific reason otherwise, choose silicone.

Silicone vs Latex Pessary — Side-by-Side Comparison

Feature	Silicone (Modern)	Latex/Rubber (Historical)
Allergy risk	None (biocompatible USP Class VI)	Real — latex allergy affects 1-5% of US population, higher in healthcare workers
Porosity	Non-porous	Slightly porous — absorbs discharge, harbors bacteria
Odor absorption	Doesn't absorb odor	Absorbs odor over time — requires more frequent replacement
Typical service life	1-2 years with proper care	6-12 months, sometimes less
Autoclavable	Yes (134°C / 18 min)	No — degrades under high heat
HCPCS insurance code	A4562 (Pessary, non-rubber) — correct current code	A4561 (Pessary, rubber) — historical code, few payers still use
Cleaning tolerance	Boilable, mild soap, extremely durable	Cannot be boiled, degrades with harsh chemicals
Lubricant compatibility	Water-based only (petroleum-based degrades silicone)	Water-based only (petroleum-based degrades latex faster)
US market availability	Standard — all major brands (SciMed, Milex, Bioteque, Cooper Surgical)	Rare — few brands still stock; historical inventory only

Why modern US medicine moved to silicone

1. Latex allergy risk grew. As latex use in healthcare rose in the 1980s-90s, latex allergy became more common. By the mid-2000s, most hospitals moved to latex-free devices system-wide, including pessaries.
2. Silicone lasts longer. A 1-2 year silicone pessary is cheaper per year than a 6-12 month latex pessary, even if the silicone unit costs slightly more.
3. Odor control matters. Latex absorbs vaginal discharge and develops odor within months. Silicone's non-porous surface resists this entirely.
4. Autoclavability enables clinical reuse. Clinical fitting kits (like SciMed's 7-size kit) need to be sterilized between patients. Only silicone tolerates autoclave cycles.
5. Insurance coding. HCPCS A4562 (silicone/non-rubber) is the current standard code for reimbursement. A4561 (rubber/latex) is legacy — many payers phased it out.

What is USP Class VI silicone?

USP Class VI is the highest biocompatibility rating in the United States Pharmacopeia (USP) classification system for medical device materials. It's tested for:

• Systemic toxicity — doesn't cause harm when in prolonged contact with tissue
• Intracutaneous reactivity — doesn't cause skin/tissue reaction
• Implantation testing — safe for extended contact with soft tissue

SciMed's silicone ring pessaries are made from USP Class VI medical-grade silicone — the same specification used in implantable medical devices. This is why a properly-fitted pessary can stay in the vagina continuously for 5-7 days without irritation.

When would you choose latex over silicone?

Almost never. The only scenarios where latex might still be discussed:

• Cost constraint in developing markets where silicone availability is limited (not a US concern)
• Legacy inventory at a specific clinic that still stocks latex from older orders
• Very specific research protocols studying long-term latex use (uncommon)

For a US consumer or clinician in 2026, there is essentially no reason to prefer latex over silicone. If your provider mentions a latex pessary, ask why they're not using silicone.

The HCPCS coding difference matters for insurance

The two HCPCS codes for pessaries:

• A4562: Pessary, non-rubber, any type — correct code for silicone (SciMed uses this)
• A4561: Pessary, rubber, any type — historical code for latex

Most US insurers reimburse under A4562 at $40-$70 per device. Some payers no longer accept A4561 at all because the underlying device (latex pessary) is considered obsolete. If your clinician bills the wrong code for a silicone device, the claim may be denied — even though the device is legitimate.

See our pessary cost guide for full HSA/FSA and insurance details.

Silicone pessary care vs latex care

Silicone (SciMed Ring Pessary)

• Wash with mild unscented soap + warm water
• Can be boiled 3-5 minutes weekly for sterilization if desired
• Autoclavable at 134°C / 18 minutes (clinical use)
• Store dry, away from direct sunlight and petroleum-based products
• Replace every 1-2 years or when visible wear appears

Latex (historical)

• Wash with mild soap only — harsher cleaners degrade latex
• DO NOT boil — heat degrades latex
• Cannot autoclave
• Store dry, away from all heat and petroleum
• Replace every 6-12 months
• Discard immediately if odor develops (indicates porosity failure)

What SciMed uses

Every SciMed pessary is:

• USP Class VI medical-grade silicone — highest biocompatibility rating
• Platinum-cured — no residual peroxide contaminants
• Latex-free and BPA-free
• FDA 510(k) cleared as Class II medical device (FDA Product Code HHN, 21 CFR 884.5350)
• HCPCS A4562 billed correctly for HSA/FSA and insurance
• Made in San Jose, California — not imported

Shop Ring With Support ($49.99) or Ring Without Support ($49.99).

Frequently asked questions

Related reading

• Pessary Cost 2026
• Ring Pessary Size Guide
• Care & Cleaning Guide
• How Long Does a Pessary Last?
• Best Pessary for Menopause