Hygienic Quarter-Turn Latches

Hygienic Quarter-Turn Latches for Food, Pharma & Medical Equipment

On food processing and pharmaceutical equipment, a latch crevice that cannot be flushed is a bacterial accumulation site and a failed audit. SecuriLock hygienic quarter-turn latches close this gap: smooth surfaces with no exposed springs, a blue silicone sealing ring that can be checked at a glance, and washdown protection rated IP69K. Bodies and cams come in SUS304 or SUS316.

Three series cover panel thicknesses from 1 to 15 mm. The SLC3 compression series clamps the door shut with 7 mm of travel and holds 700 N. The SLC2 and SLD1 series handle thin panels from 1 to 5 mm in a compact quarter-turn format. Tool-operated inserts are available in five drive codes; the rotary series offers left- and right-hand locking.

For equipment standardized on EMKA Program 1000 hygienic quarter turns: the SLC2 and SLD1 series match 1000-U838, and the SLC3 compression series matches 1000-U861/U862.

Full series mapping: EMKA hygienic latch cross-reference.

SLC3 — Hygienic Compression Quarter-Turn Latches (1–15 mm panels · SUS316 standard · 700 N · 7 mm clamping)

SLC2 — Hygienic Quarter-Turn Latches (1–5 mm panels)

SLD1 — Hygienic Quarter-Turn Latches (1–5 mm panels, five body styles)

Each model is configurable by drive code, material (A1 = SUS304 / A2 = SUS316), rotation (L/R where available) and cam length or effective height. Send your door drawing for the full selection table.

Why these latches are hygienic by design

• No exposed springs or unsealed threads on the product side; radiused transitions clean down without disassembly
• Blue silicone ring at the panel interface: seal position and condition are visible during washdown checks
• Rated IP69K for high-pressure, high-temperature washdown
• SUS304 or SUS316 to match splash-zone chemistry; the SLC3 series uses SUS316 as standard
• 90° turn with the cam engaged behind the frame, not a friction fit

Hygienic design standards

Typical applications

• Food & beverage processing: filling lines, mixers, conveyors, packaging machines (industry page)
• Pharmaceutical & cleanroom equipment: washdown-zone cabinets and access panels (industry page)
• Stainless steel machinery: machine doors, inspection covers, access panels
• Control cabinets in washdown zones

Matching sealing hardware

The same enclosures need sealing from the outside too: hygienic fasteners, including the SL-J-2600 sealing bolt and SL-J-2601 sealing nut.

Frequently asked questions

What makes a quarter-turn latch “hygienic”?

Three things have to work together: crevice-free geometry with enclosed mechanics, a food-grade seal at the panel interface, and stainless construction that survives alkaline and chlorine-based CIP chemistry. A polished standard latch does not meet any of these by default.

What does IP69K cover?

Close-range, high-pressure, high-temperature washdown, the cleaning method used in food and pharma plants. For IP65/IP67/IP68/IP69K differences, see our IP rating guide.

SLC3 compression or SLC2/SLD1 standard?

Doors from 1–15 mm with gasket compression or vibration: SLC3, the cam travels 7 mm further to tension the panel closed. Thin 1–5 mm panels and light enclosures: SLC2 or SLD1.

SUS304 or SUS316?

A1 = SUS304, A2 = SUS316, both available on every model. The SLC3 series is built in SUS316 as standard.

MOQ, samples and payment?

OEM from 100 pieces, exact MOQ depends on configuration. Samples at actual cost. Payment by T/T.

Documentation for HACCP or audits?

Material certificates and batch documentation can be provided with the order. Mention it in your inquiry.

Send your door drawing, panel thickness and cleaning regime. Our engineers reply within 24 hours.

EMKA is a trademark of its respective owner; this reference is provided solely for compatibility description and implies no affiliation or endorsement.